I started dA in 2010 I think, I mean I was 14 so of course no quality art, but I was sure that I wanted to make it a career sooner or later anyway (so I really put effort into it). Back then I got some comments from kids who were even worse than I, so it was kind of cute and it was relatively easy to get into some kind of community. I don't talk to them though, mostly because they aren't there anymore or even deleted their accounts.
I can't deny that dA had a huge influence on me, I found some really helpful tutorials I still keep as a get-go because they're just great. Back then you also got more critiques, older/more advanced people took their time to actually help, or I just found a handful that did. Plus there was a group project to critique as much as you can within 1 week, it really was fun and partly even helpful for me.
I mean yes I did a lot of fanart back then, especially when I was most active in 2012/2013, but I can't say it exactly gained me more followers. I have a grand total of 139 followers, and I bet at least half of them are actually deactivated accounts (one big issue that hasn't changed - it takes forever until dead accounts vanish from the follower list)
It wasn't particularly great but I had my friends, we could share advice and admire the more popular artists from afar.
Then the whole "draw my oc for free here are 10000 reference links to their entire backstory, check there for any descriptions lol" started (I actually did that two times). Apart from the whole "Cheap commission!! headshot 10 points!!" - which made me believe that my art was basically 10 friggin cents worth because that's what everyone charged, right? - the most horrible thing on this site. As soon as I got more comfortable in my skills, I seriously asked others if $5 was too much. dA was very toxic in this case, like "you cannot charge anything if you aren't from the top notch." I only realised when I left for tumblr and twitter, where people like me charged way more, and still got commissions.
Also, on especially twitter, people are so much easier to approach? Popular artists on dA rarely replied to the masses of comments they got, but on twitter it kind of just works. Plus it has some kind of "multi-cultural flair" to it - on dA it's got incredibly hard to work up the ranks and it's mostly always the same people around you, and on tumblr you just stay in your fandom nieche but actually have a chance to get seen and work your way up there. Original stuff is hard to share either way, but to me tapastic works out for that just fine at the moment.
Also I'm glad that memory didn't fail me and the CORE membership indeed is roughly twice as much as Premium used to be. I shortly thought about getting one again but then decided against since I have adblock anyway, and only throw off my best pics lately and run away again. I don't even check in the groups I'm in, barely even the people I follow because I know their "new" things from other platforms anyway. All comments I get are basically "nice" "cool" etc.
It got very superficial, but maybe that's a mutual thing with this platform/community..