Yeah telegram is for chatting - a bit like Whatsapp. But there are groups that post furry art, more like a forum. The fact that it allows custom stickers attracts a lot of furries!
I guess with any platform you'll have people that try it out but don't end up sticking around.
Anyway, the Yiffit sign ups were closed last I heard, which makes it tricky to attract new people! Maybe pawb.social would be worth advertising, and then people from that instance can post to yiffit like I do.
In some ways having it be a fairly quiet location is sort of nice - reminds me of being on forums when I was younger. But yeah maybe it's a bit too quiet.
Ah hopefully it is possible for new users to sign up then! With any luck if we keep a little community going here, eventually others will come.