It seems that way, because these are the people that are the most vocal about it. Indeed, most people who complain about this are just grifters. The reason you

It seems that way, because these are the people that are the most vocal about it. Indeed, most people who complain about this are just grifters. The reason you don't hear about normal people complaining about this is because they are nobodies, they have no other platform to speak out when they get banned. The rules are almost always really vague and it's not clear what you can or cannot do. For example facebook can ban you if what you've said might be interpreted by someone as offensive. From what I've remember, they specifically say that what you've actually meant does not matter. If someone just might think it's offensive, you get a 30 day ban. At least they used to have this rule at the time I left facebook, and I left it precisely for that reason.