Seems like people have to migrate every few years anyway. Either a site falls to shit or it is taken over, degrades into fetish fuel, there is always something going on.
Deviantart actually used to be an okay place before everything turned into the most garbage level fetish pics drawn by what looks like middle schoolers on notebook paper.
CGHub was also decent for getting to meet and chat with professionals and then it was bought out and closed down.
Tumblr labeled every single thing under the sun as porn and deleted it for no real reason.
Art Station looks okay but a lot of people are shy about trying to start over again on a modern clone of CGHub before that vanishes and takes all their work away with it too.