I think this is why Discord is doing great. You can easily find communities about specific topics where you can chat in real-time with people... and whatever you write in there feels somewhat ephemeral, instead of being permanently stored on the public internet.
True. Chat feels alive. Quite different from posting on social media where next you have to wait whether anybody even saw it at all (usually not) and can be bothered to like it (which does nothing) or respond to it.