Same here

Probably, that would defeat the purpose of the Fediverse a bit, but it’s doable

Have you tried Thunder?

The top comment there explains why it doesn’t matter as you have plenty of other instances than Lemmy.ml to select. I wouldn’t worry about those posts too much, actually they kinda make good promotion for Lemmy

They manage lemmy.ml. As long as you are not there, they have nothing to do with you.

Thank you for your feedback