But because you don't do it online, you don't get quicksilver for it.

As TerriblePurpose (with thousands of hours into the game) pointed out way earlier in the thread, it's possible to mine QS in offline play. It's rare, but once you found a source, by tricks like leaving/re-entering the system it's a continuous resource. Coords for systems that have it are covered in FAQs and stuff, and frankly, it motivates me more to explore to find a system like that than playing stoopid generated online missions.

If the QS shop is really unlocked fully without hacks for offline players now, I'd consider the game completely DRM-free again.

If getting the QS is too slow for anybody, they can still simply hack the savegame - otherwise it's just a reward for thorough exploration.

Yes, but you can't mine QS by ignoring people, even offline...

Thanks for the warning, was awaiting for devs to fix/optimize the game before buyng it but since it won't be complete whitout a connection is best to stay away from it.

I believe the issue was fixed by Hello Games in a recent update. Looks like perhaps this thread didn't get updated?

Yes, it was fixed in patch 3.13.
An up to date list of games with DRM on GOG can be found here: https://www.gog.com/forum/general/drm_on_gog_list_of_singleplayer_games_with_drm/page1

Can verify all Sp content works offline, put down the pitchforks!

I will keep it close by, just in case :D