I'm sorry, but I can't get behind the idea that you're entitled to an account on a private company's site. Are they obligated to protect accounts for shitposter

I'm sorry, but I can't get behind the idea that you're entitled to an account on a private company's site. Are they obligated to protect accounts for shitposters, to the detriment of everyone else's experience? Nobody is stopping you from starting your own blog and posting your views there. But, just like no one is obligated to seek out a flyer you post on a telephone pole, no one is obligated to seek out your writings.