a bunch of stuff that isn't about removing content from the game
Hi there --
It sounds like you haven't played the game in a while. A lot of the things you mentioned here are either not true, kind of not true, or outright false
Examples:
Reliability of being able to tell cures apart - Those that can tell cures apart can tell cures apart. There are still 'old cures' around in the game too.
the inability to reach master level in drawing without the aid of the Atrium - Speculative. You can reach master level with a teacher, not necessarily through the Atrium, AFAIK. This also isn't removing content.
the fact that two powerful non-human npcs constantly guard the way into the nonhuman section of the rinth from -everyone- -- Not sure what you mean here. Half giant soldiers? Elves, guarding against non-elves into the Elven Eastside?
Vennant, the bartender of the Gaj, being able to tell people about a honey-mead deal where the supplies for such ended several thousand years ago - This is simply an old rumor, hard-coded to the NPC, and obviously hasn't been changed in a while. Similarly, Vennant is like 7000 years old, so maybe he just tells stories from back in his day. There is a bit of suspense of disbelief here. Worthy of 'idea'ing in game.
templars not being able to have a damn social life outside of their own assistants -- Uh...False? Templars socialize with Nobles, even Commoners, like all the time.
witches being unable to reasonably interact in a positive way with nonwitches - Also not necessarily true, though also in line with documentation. Mages aren't easily trusted by non-mages, or even by mages across their elements. It isn't easy for them to be chummy, or non-mages to be chummy with them. As intended.
legal crime in Tuluk apparently requiring a tattoo that needs to be covered up anyway - Not really relevant with Tuluk being closed, but fits in with the documentation of Tuluk. Having the Tattoo was a free pass if you were questioned about a crime, or implicated in one. Simply had to show it to soldiers or templars and they would let you walk away.
In general, these just seem to be complaints, not drawing attention to things removed from the game.
Others are vague, and I'm not sure what you mean (Ex. Broken Fighting System).
Still -- If you feel like playing the game again to see what's up, you should.