Pretty much the same. At first, blockchain projects seemed to favor Slack, but then scammers ruined it, harming many unsuspected victims. Slack team didn't do much to stop them. People mostly left for Discord and Telegram. In Telegram, when someone you don't know writes you a private message, for some reason your suspicion level is higher, so the scammers didn't like Telegram much. And then MetaCert Security came and kinda solved the problem.
The downside to Telegram, as you have noticed, is a very low signal-to-noise ratio. At least in Slack there was a #random channel, for all the "when lambo"s.
So, is it time we call the bluff on this particular social media platform?
And where would you go instead?