Are these channels actually getting paid to react?

I would think so, otherwise why else would they do it? They don’t genuinely think people give a shit about their reaction

U cant monetize on copyrighted content without getting the permission from the author who posses the intellectual property, Supes (Matt Ramos) is an actor and producer with a good number of follower in all social media so we can safely say that the reaction were made to sponsor the series after getting the permission by the author, its already pretty difficult monetize with viral clip since the owner of the It can report the channel and get your account banned for stolen content, I can 100% assure u reaction from anime/manga without authorization cant monetize in any possible ways