Social media outlets are publishers, I have no problem with them editorializing. I wouldn’t have a problem with a book store not carrying a book or a newspaper not publishing a crank opinion piece, why should I have a problem with twitter banning someone (or whatever else)?
Because then you will have to shut your mouth when Google delists you, youtube deplatforms you and Amex/Visa/MasterCard refuse to do business with you just because something, perfectly legal, that you said. Maybe it is OK for you, for me it is bone chilling scary.