You already can view his content without contributing. Just use an adblocker. But when you encourage others to watch people who steal his content and don't make fair use content you are instead intentionally causing harm to the creator, which the creator has a right to sue over.
So people can be critical and not contribute. This is about intentional harm and getting caught doing it.
They did do it. Before the snark Reddit was removed, there was a pinned thread urging people to only watch his video from a list of channels that said they'd steal views.
Before that there was a pinned thread urging people to mass report him to CPS.
Puppies poop on the floor. Babies crawl on the floor. Preventing both is difficult. The disease in question is fairly common (and often found in babies who crawl on the floor when there are pets), and even if you clean the floor there is a chance spots are missed.
If the mods truly are innocent, I say let that be decided by a jury.
Edit: the kid in question, by the way, did in fact not have Giardia.