One problem with kbin is that the whole federation of instances thing didn't work so well there. It seems all the users and all the content is one one server: kbin.social.
This is concerning since it introduces a single point of failure.
There are other instances like kilioa.org andothers I can't remember but kbin.social is absolutely the 'flagship' so to speak with over 40k users. They are trying to encourage more to go to the others.
I got on kbin.social since I didn't know a ton about all this and figured things would go easier on the 'main' instance.
Ernest did get the server upgraded and federation fixed and all that. He's got a post about it on @kbinmeta
No, federation was temporary disabled to make the server survive the huge influx of new people.
Check https://kbin.social/ and you see plenty of content from Lemmy instances.