I completely agree that you should have the choice to opt out of this toxic "content".
But I believe the issue that RC is talking about is that the control is in the hands of the admins instead of the individual in Mastodon.
It allows something like GMail admins blocking their users to send/receive messages from HotMail, and then your only solution would be to create a second account in some other provider that doesn't block HotMail.
In history everytime a high wages became a problem it was solved through tecnology (mecanization/automation) or by adding more workers (slavery/immigration/outsourcing).
I don't see any reason todays America would be any different.
https://www.youtube.com/watch?v=b7dYcJaCOMU