Well, the thing with Discord is that it's more of a chat than a blogging platform, isn't? You could of course join Discords about several fandoms (I'm in a couple of them already), but it's hardly a replacement, especially for artists.
It's good, though. Completely replaced Skype except for a single friend on my side.
It's a very good platform, pretty nice for positivity/struggle support spaces, I'm a member of one (a multiple opportunity one) and starting a second, local one aimed at neurodiversity. There's also game channels to chat with players and sometimes devs for betatesting (I became an admin of the official Avorion one).
And there's some adorable bots, like Ayana
, and Sigma
◊ who has hilarious "playing with" occupations 😋.

https://en.wikipedia.org/wiki/Discord_(software)
Due to what is happening at Tumblr, it would be good to have a forum dedicated to Discord, since many tumblr users are migrating towards there.