What gives the OP the right to tell anyone what they may or may not post? I find the OP far more flawed than who he is complaining about. It's extremely arrogant to start a thread telling people what they may or may not post (not being the moderator).
The OP is equivocating that down-voting is suppression. No, it isn't. Stop being thin-skinned, OP.
Good thing he isn't telling people what they may or may not post.
Since you appear to have reading comprehension problems, I will aid you by displaying the OP telling us how to post in bold. I will add my notes in italics.
Maybe it's not my place to bring this up (after the occasional shitting bull I've left around here and there), but I do feel like there tends to be a bias here, in the sense of "GOG vs. other digital retailers, most notably Steam". Given that GOG is heavily promoted for its DRM-free-ness, naturally people who have had bad experiences with Steam/Origin/other DRM are going to come here and vent. And I think that's okay. [He is giving us permission here because he thinks it is okay. How kind of him!]
The problem comes when people (and I'm going to the extreme here) think that GOG can do no wrong, and when some of those people are unwilling to let criticism appear on the forum. [He is saying it is not OK for people to not allow criticism to appear on the forum. Who is he to say what is allowed or not?] GOG is great, and I actually think Steam is pretty great, too, although I don't frequent it, but both are far from perfect, and if something is bothering a user, he should be able to express it without "fear" of being downvoted. [Telling us that other people's behavior should be controlled (by whom? He doesn't say, he just goes on) because people shouldn't 'fear' being downvoted.]
Well, the physical act of clicking the "-" isn't such a big deal, it's the concept behind it - like one is going to put his or her hands over his ears and go "La la la la can't hear you" to a problem that needs to be addressed.
Now in the case of the 5/10 dealio thread, some bullshit was being thrown around (by whose standards? His own. The OP had defined himself the arbiter of bullshit. I'm sure the people posting it didn't think it was. What an arrogant statement for the OP to make.], but I also think some points were made in downvoted threads that needed to be considered (OP is telling us to consider points. Apparently, the forum is not allowed to downvote what the OP doesn't think it should.), most notably what I'm bringing up here - a double-standard about what can be criticized.
So, in a nutshell, I guess what I'm suggesting is, you don't have to criticize GOG, but don't try to "block out" those who do. Same goes for other digital distributors, and maybe everything else in general. :-P (something like that) Believe it or not, it's tough for me to hear people talk bad about GOG in the various game forums, but these are still complaints that shouldn't be suppressed. Likewise, Steam complaints shouldn't be suppressed on Steam or here. (Downvoting isn't suppression. He's telling us how we can post and what we may or may not downvote. Arrogant to the max.)
Personally, I think the fact that the GOGMixes are broken (and still /up/, at least the "+" button) is unprofessional. Maybe support could be better, but I'd like to see some data on how well other digital distributors of similar size help people (more telling us what is should be allowed to be posted). I'm wondering if, as the catalogue grows, the catalogue page needs to be redesigned to promote less popular games or bring them to light on that page. And I'm sure there are other things that need to be changed or tweaked, but I have to finish a project.
Hopefully this clicks with some people without offending them. (the only one who sounds offended is the OP because he can't control how people post or downvote.)