It depends.

Should governments regulate what you can or have to say? No (except if you threaten someone, call for physical violence etc.)

Should individual people have the ability to ban you from their property or web service because of what you say? Yes (I prefer if they don’t but it should still be their right to do so)

Should businesses? Yes but probably not arbitrarily

What about spaces that can be seen as public forums? It’s complicated, maybe it should be handled on a case by case basis