Tumblr and Twitter are more accessible social media platforms.
While dA is a better gallery site, it has no real use as a social site. It's just a bunch of (mostly wannabe) artists talking with others just like them. Your every day internet user doesn't go to deviantArt because they themselves aren't artists, and don't care to go looking for artists. Can't exactly make a business there. But, being on Tumblr or Twitter means that the average schmuck can share your work really easily, get your name going around, and bam, suddenly you have an audience.
A host of other problems are apparent as well. Maddening moderation, a laughably outdated interface that makes the act of viewing art a chore, absolutely no manner of quality control whatsoever, etc. etc.>>105783252
The porn purge was done with a hilariously underdeveloped algorithm that, prior to the second wave, gave a deathshot to a lot of blogs that were not only non-pornographic, weren't even art centered. Since the algorithm was tweaked, it has still constantly flagged totally innocent imagery as adult material.
What the purge did wasn't just move porn artists off the site, it made a lot of people distrust the site. At the mere drop of a hat, you could be gone for any reason or no reason at all. Few people want to stay on a site that can happily so radically change its policies so quickly, alienating huge swathes of its users.
Also, the new background color for the dashboard is ugly as sin.