I don't know if responsibility is the right word, but I believe channels should moderate their comments. Pre-internet, people with incoherent, offensive rants didn't have a forum on other people's creations. They didn't write for publications and their letters wouldn't be published by editors. Now with the internet it appears they are everywhere. There's no place for for ignorant comments on my channel. They have the freedom to create their own channel, write their own blogs, and publish their own works in any way they want nowadays. I won't have trolling, or ignorant comments on my channel. I really barely get any - maybe a few intentionally bad comments over all the years. But I will get people actually advocating for having an endangered animal as a pet at least once a month. Those comments get deleted immediately upon my seeing them.