Host the wrong content, you are out, get sued because of someone elses trademark on your domain, you are out, registrar actually dissolved or has weird stuff? out.
True...but there are alternative approaches...such as maybe register a couple (not alot) of alternative, different domains. I think the trick is to keep the number of alternative domains low enough that it wont break the bank, but still give the option of serving as sort of backups. Then again, one would need to understand one's "threat" model before beginning to post content that might be "attacked" by others.