I thought banning him was a bit harsh but he also shouldn't be able to market himself as a "news" channel or any sort of serious political channel because he is quite provable a borderline satirical propagandist and a nut job that if taken seriously can cause some real harm.
As a European I might have a different view on this compared to Americans but I really don't feel free speech should be unlimited, if it's clearly intended to sew mistrust of state institutions and misinformation to profit from it, it should at least be made obvious that this isn't information to be taken seriously since it has no foundation in reality.
That being said of course Youtube and co. are free to ban whomever they want if they don't feel like supporting their nonsense, it's not like there is a public right to publish your opinion/idiocy on these channels.