You already have a way to stop them: block them and call them out. In the close future, there will be relays that have a more strict and specific content policy, so if you agree with the policies, you can plug your feed only on those relays. But we have to be careful about what we wish for.

And in those mechanisms relies the original sin

That’s the problem, you mention “mechanisms”, which is just an euphemism for “censorship”.

The real question is “where does your freedom starts and mine ends ?”