I don't agree that corporations are people. If you believe that a corporation is a person, then I see your argument, despite not agreeing with it.
Even if you want to insist that YouTube can not possibly be a victim, it’s still horrible to jump on a multiple attempted homicide to criticize policies about videos posted on a web site.
If you steal from a corporate-owned store, is that a victimless crime?
A corporation is owned by people. It is not "made of" people like some grotesque colossus.
People got shot and HN commenters are using it as a platform to criticize content policies of the company they work for. That is the pertinent thing here. Semantic quibbles about which specific entities count as the “victims” are not terribly relevant.