I've joined 3 weeks ago and aside from a couple of images not being visible once in a while and my instance being down one day, I haven't had issues at all. But I could easily create an account on another instance as backup and browse there.

Signup was a bit confusing at first because the apps are not 100% there yet, but in general the apps do everything you want them to 99% of the time. Only "powerusers" will be unsatisfied.

There is easily enough content to browse all day already and I'd say a lot of content isn't even techie related or politically charged.

I'm just missing a few art subreddits, but that's it, compared to Reddit it was a pretty easy transistion. I don't miss it at all.