Does anybody knows how do I get them permanently deleted or I’m powerless against it?
Instead of bulk deleting you should bulk change your comments directing people to Lemmy.
Even that didn’t work for me. My old comments kept popping back up. I had to delete them mulitple times and then manually whackamole the ones that popped up to finally get rid of them.
And they’re probably still there. I haven’t gone back and looked lately, but I did the delete whack a mole for about three weeks until my account was empty save for my up/down votes. It’s still empty.
But I looked up something a couple weeks ago and went to the Reddit link …and one of my comments was right there in the thread. There were others I could find via google, but not search on Reddit. They’re only there in context.
Reddit spam filter autoblocks websites that get overly posted out of context