It would be better if people like you could realise you have no idea what free speech is.
Free speech is not free from the consequences of said speech.
If a private site feels that your words are not warranted, they're free to turn you away.
Nobody owes you a platform to say whatever you want without any responsibility due whatsoever.
Is it censorship to arrest someone for falsely shouting fire in a crowded theater? No. It isn't.
Obligatory XKCD: https://xkcd.com/1357/