Sorry but you have no 1st amendment rights in a private company.
It says the Government can't restrict your right to free speech.
And free speech doesn't give you the right to be heard.
It's not a government owned company, USSC has already ruled on this position several times.
And you can post but it doesn't mean I have to read it. I have the right to not read shills and pron posters, anti-God crap
Thereby I limit your right to free hearing of what you say or type.