You mean "no one" is 9?

You can block his account, but if something comes up to where you have an issue in another game I.E. a patch that isnt released, multiplayer or some shit not working, then if HoD has the "fix" or knows about it, youll not know since youve blocked him. He doesnt only post video annoyances (yea, theyre slightly annoying sometimes) but still. theres way more (ALOT) more others that spam the every loving shit out of videos of them playing a game (horrible playthroughs) at that. So, just ignore em.