I've said it before and I'll keep on saying it: The original formulations of freedom of speech weren't about protecting the rights of the speaker or writer. They were about protecting the rights of those who wanted to listen or read. Every time you ban a document or silence a speaker, you are also preventing people from reading what they want to read or hearing what they want to hear. That harm is far greater than whatever happens to the author.
Again, YouTube is a private company and they can do whatever they want when it comes to curating the information they store. I would be against any law that compelled them to host information that they didn't want to host. But in the long run, I think their current policy is extremely counterproductive. Imagine if YouTube existed 30 years ago. Would they have banned atheist views? Would they have banned videos critical of Bill Clinton during the Monica Lewinsky scandal? What about videos endorsing transgender ideas? Many views that were considered crazy at that time are now acceptable today. Suppressing heterodox views means that fewer are exposed to them and moral progress is impeded. Yes, most fringe ideas are bullshit, but every once in a while we stumble onto a diamond: Slavery is wrong. Men and women should have the same rights. Homosexuals should have the same rights as heterosexuals. Etc. These were all extremely controversial ideas when they first came into the public sphere. Earlier versions of our society suppressed them as dangerous misinformation.
So far, we haven't figured out a way to separate good ideas from bad ones besides exposing people to them and seeing which memes reproduce in the population. In other words: If you ban people like Alex Jones, you also ban people who are activists for causes that society will adopt in the future. And we all end up worse off.
There are certainly views that we hold today that future generations will condemn us for. Better that we discover them sooner rather than later.