Especially when they give you a countdown timer of when it will start.Isn't that pretty much always the case in such chat boxes for sports events? Most popular question of course is "when does it start" and "when does xy start". That's alright, but you will get the question 100 times at least and it's the same answer each time.
There is one thing they are good for imo, that's when your stream isn't working and you realize it's the same for all others and it's not the fault of your technical setup... that's basically it. Even the chatboxes at the chess world championships seem full of ignorant and very vulgar people.