There are a lot of people on the Internet; a nonzero number of them are frothing assholes; and frothing assholes are quite capable of running servers.
There are people goddamn sure that if you don’t accept their horse porn, that you must hate free speech.
I wouldn’t call blocking gore, nazis, and pedos “widespread”. For anyone who hasn’t heard the nazi bar story (source @IamRageSparkle on Twitter):