Businesses that hold a massive and unfair effective monopoly on communication and information are different from unremarkable coffee shops. And, furthermore, this is not an action that the business is going to take out of their own freewill, it's an action that you want to force on them by some mechanism of public rage, so it's not actually YouTube choosing who they do business with, it's YOU choosing for YouTube who they do business with, but masking it as YouTube's own decisions.
I don't get the obsession with removing dumb online stunts. I can understand calls for censoring violent crimes and even then you don't get to make this decision for other people, censoring unpleasant things doesn't make them go away.
But with dumb online posts the case just completely falls apart. "But he's going to benefit from this" ok so fucking what ? there's a whole class of people who do dumb, dangerous and harmful things for public approval and profit from it, they are called polliticans and celebrities. They routinely do unimaginabley stupid and outrageous things and profit from the publicity that comes with it. How is this any different, except that "online influencer" is a relatively new class of people unlike the other ones?
>There are some protected categories
Appealing to protected groups is the weakest argument you could ever make for "Businesses can censor whoever they like". Protected groups are arbitary and reflects lobbying and political considerations more than any moral truth. Why are some religious groups protected for instance? it's just a bunch of beliefs, they could be as wrong or as dumb as any other set of beliefs right ? they are not immutable characteristics of the people believing them. (not anymore than any other kind of beliefs)
My own personal opinion is that it's stupid to classify people as "Protected" or not, but rather any business that have reasonably-easy-to-find alternatives can do whatever the hell they like, refuse to serve customers based on skin color, gender, favorite programming language, you name it. As long as it's "easy" to find alternatives (by some objective standard the law defines, like "there's is a similar service within a 1-KM radius"), they can do whatever they like.
But for all other businesses who aren't so easy to replace, common sense morality says they should be EXTREMELY curtailed from censoring or denying *anyone* without a very good reason.
Alas, we don't live in my utopia and the laws of this time and place are extremely dumb and discriminating.