The topic has come up in relation to this question, and at least from my point of view, has caused quite a stir in the community. It would seem that the community is split on the issue of graphics cards-based questions in relation to gaming.
As it currently stands, the tag description is as follows:
Referring to problems with a graphics card, the graphics processing unit, usually on a PC, or specific settings on a graphics card for a specific game.
This is a bit of generic description, but it also seems to be pretty limited. Graphics cards, at least in the past 4 years since this topic was discussed in the meta, have become an integral part needed for gaming. Sure, games can be run off of on-board graphics, but I believe that for what it's worth, and for the sheer amount of games that do indeed require a GPU, the topic should be revisited.
I believe that Arqade's current definition, and the subjective definition from some users, is archaic. To need a game attached to a graphics card question is, at this point in time, silly and illogical. GPUs can be used for video editing and rendering, sure, but their primary use is most likely for gaming, which falls under our jurisdiction. It is rare to even see companies like NVIDIA and AMD advertising their GPUs for anything other than gaming. As they are directly related to gaming, those types of questions should be allowed on Arqade, whether they have a game attached or not.
Additionally, the linked question mentioned OpenGL as well, a platform for rending 2D and 3D graphics. This was also seen by some users as ambiguous information that has nothing to do with gaming. I'm not suggesting that OpenGL become a tag for Arqade, as I know its usage spreads beyond gaming, but questions pertaining to the use of OpenGL with a graphics card should also be allowed.
I'm sure I'm missing parts here, as it's a pain to go back into the chat and look for every point that was made, but anything additional is welcome. I think this is an important distinction that should be made for Arqade, and there also needs to be a solid place where the usage is defined, instead of multiple meta posts from years past.