Even if you delete all your posts you should know that everything is archived and backed up in bitcointalk forum with multiple services from LoyceV and Ninjastic.
Sometimes it bothers me. I understand it's a public domain but I think everyone has their right to request their online activities down. In the forum you can do that, or at least you do it manually. But for Loyce.club, ninjastic.space, merit dashboard, bpip.org are they allowed to freely archive data, according to general law? Some terms and conditions really need to apply here which will be visitor friendly.
When I am creating a content, I am obliged by the terms and conditions of the forum. If there was a permission kind of something and if I was asked to give them permission to archive my data, I would say no.