First of all. Thank you for everything you've done so far. I mean no offense at all with any of my comments.

I just believe that if someone ends up say "banned" client side, they will come back just making another npub and trying again.

There is nothing costly in having a voice on the public relays.

So clients and relays will need to implement costliness to either post or create accounts. whence : "clean clients and relays".

Other clients and relays will not enforce bans and thus will be cheaper. So there will always end up being "undesirable" voices coming through the "clean side" unless a walled garden is enforced.