

I have the same problem as you with mastodon, I’m interested in topics not in people so the format just doesn’t make a lot of sense to me.
I’ve had very limited success with following hashtags, it sounds like a neat idea, but I’ve not found enough hashtags that I’m interested in with enough activity to make it worthwhile.
The nature of it also makes it more superficial - it’s short comments and posts on a topic rather than more in depth discussion.
In the end, I think mastodon is a really neat replacement for twitter - but I never had a twitter account for a reason, and those reasons are still there with mastodon, for me at least.
You won’t find any of those things in any reputable IQ test. I’d be surprised if you found them even in a bullshit online test.
Maybe you just had a particularly bad experience and it has given you a false impression of what an IQ test is.