Indeed. Since you aren't limited to posting in only 1 place, and can change your mind at any time, posting on kbin seems like a wholesome start. If someone creates a great art-centric site later on, you can switch over as needed.

I've looked around a bit, and haven't seen any place with the amount of submissions that deviant art used to have, or the quality level of artstation. So far I tend to enjoy mastadon the most for art, even though it's not a big community. And I mainly check out artstation once a week for my fix of sci-fi, fantasy, concept art etc.