I agree with this view, platforms like Youtube (and Reddit) can't be allowed to hide behind this veil of being "private". As major platforms, they're important channels for speech. I think once a private company has amassed this level of the public attention their influence needs to be kept in check. The profits will stay private, but there needs to be limits on what they can "limit". I think it's a similar argument to why a diner can't choose to not serve a person only on their ethnicity.

I think all speech should be protected (the good, the bad, and the weird). Ideas should die on their own merits.