Yeah, I think it's an artefact of those mainstream apps. You go to Twitter to microblog. Substack for longform. Instagram to post images, etc.
So, everyone came over here and started building
Twitter... in purple
Substack... in purple
Instagram... in purple
Wikipedia... in purple
GitHub... in purple
Amethyst and Nostrudel actually started the Great Kind Migration by just adding everything and the kitchen sink, and letting you actively manage your relays, and Chachi and Alexandria and Jumble and ZapChat are heading the same way.
Just give me an everything app, tailored to my community or communities. Then people are choosing among designs and workflows, rather than by data type.