If/Until the culture changes the best practical advice is to make sure that those few entities are distanced from your message that they won't be pressured to take it down.
However barrier of entry there is still a bit high and they're still vulnerable to attacks, hosts don't want anything to do with them either.
We have a Finnish, for-Finns-only nonprofit community that hosts email, ssh, www, you name it that I subscribed to for €40/y and I'm planning to move all of my gmail business over there. It's easy because I've had my domain for years now and it has been redirecting mail to my gmail.
And I already moved my github pages over. (Github is also having fits for wrongthinkers.)
Not free; but you definitely get what you pay for.
Posteo - https://posteo.de/en
Both paid but they are very cheap and don't advertise to you.
Kolab is run by the founder of the European Free Software Foundation, with all that connotates.
Posteo is a German provider, aiming to be totally green and offering at-rest and in-transit PGP encryption and a host of other security and privacy features.