There are so many permanent sticked threads that an extra one is not particularly noticeable amongst them. I find it surprising that you look at the stickies daily considering how infrequently there is anything new to see.
Very strange to assume that anyone specifically trains themselves to do that. It's the fact there's so rarely anything to see that conditions one to scroll past them seeing as they are sandwiched between the bookmarked threads and the unbookmarked threads. I think an ideal solution would be to put stickies above bookmarked threads or move bookmarked threads to the bottom of the page. Not that I think it's likely there will ever been any forum improvements around here.
This!
Obviously a joke but actually not a bad idea. Perhaps an exception to the duplicate thread rule can be made.
For people who bookmark threads, they're actually in the middle.

Just below your post is yet another person saying they missed the thread because it was stickied. I'm sure a compromise can be found that can solve the problems people have with the option that isn't their preference. Tidying up the stickies so that people don't develop "sticky blindness" is a good idea.
I wonder if the simplest solution might just be a sticky thread and a non-sticky duplicate. That way the people who are complaining they wouldn't see the other one are catered for.

Might be worth pointing out that a certain non-Steam GOG alternative store sells the original DOS version.

What has little point is the bookmarked threads being there, since they're also on the main forum page. And there are a grand total of eight fixed stickies at the moment, hardly a large amount by any count, and two of them, the rules and that dead one that was pointed out, don't change and are at the bottom, so that leaves six that may be active, so when a seventh pops up it should be a noticeable increase. And those six get pretty regular activity. Very regular in case of the what did just update one, less so in case of the regional prices update one, but when this latter one gets activity it's often an exchange rate change announcement, which also often tends to announce a big sale, so it's notable. And the news and staff threads thread is also one you may want to check, just to see if you missed anything else.

I've set a bookmark for delistings in GOG Galaxy. Is there an option I'm overlooking to sort forum searches by descending date order?

Bookmarking a page actually moves it from the main forum section to the bookmarks, and I make extensive use of the bookmarks because it keeps interesting threads visible after they drop down the forum pages. Ok, I get that you don't use bookmarks but you really think no one here has a use for them?
Eight stickies is a lot of stickies for a forum and a lot of threads to be conditioned to scroll past. Who's going to notice the difference between eight stickies and nine unless they stop to check? What does most of the stickies being dead have to do with anything? If anything, that's part of the reason people become blind to them. They're just there mostly being irrelevant to me. I don't understand why you're so dead set on telling me what my experience should be?

Got that wrong. Bookmarked threads are indeed very useful, but the more useful part of the feature is that they show up on the main forum page, so little point in them also being listed separately in the subforums (the general one being a subforum after all).
Got that wrong as well, since I was saying that most stickies are actually quite active, NOT dead.
And seems like each side is telling the other what their experience should be here. And going off topic, so guess I'll stop here.

This port had a lot of problems that made it really not worth it tbh. The good news is a better port is in development. Hopefully it appears on gog.

Regardless of the quality of a port, the original game should also be made available, perhaps as a goodie. Some people just want the same pixelated low-res experience they had back in the day, not remasters.

Need more buttons/switches to enable/hide things you like/don't like.

NSFW / SFW
Pixel / Voxel / 3D
AAA / Indie
Full Games / Early Access / DLC / Owned Games
Free / Full Price / Discounted

etc. It wouldn't require that much of an overhaul as the JS would likely handle it, so long as the games are tagged correctly.

1.
You've kind of proven my point. Bookmarked threads are useful and my point is that bookmarking moves a thread to the top of the subforum, above the stickies. This leaves the stickies sandwiched between bookmarked threads and the main part of the subforum. So if I understand correctly, your argument is that GOG should get rid of the bookmarked threads section in the subforum because you consider it pointless?

2.
I see... they don't seem very active to me. Either way, being between the bookmarked threads and the non-bookmarked threads is silly. I don't have a problem with the delisting threads being stickied so much as I have a problem with the stickies being a) in a bad place for visibility and b) full of threads that are irrelevant. Why should "DVD Covers for GOG games" be sticky? That's perfect example of a thread that people should bookmark if they're interested in it. I'm not denying your experience, just defending mine. Rather than argue over whether the delisting announcements should be stickied or not, I'd rather they just improved the way stickies were displayed and weed out things that shouldn't really be there.