Look. Those people did not get a shitposter or a spammer tag just for one post. I believe they got it because they have a long spamming background. Especially when it comes to neutral feedback from Actmyname, he only tagged spammers if he got some positive report against those spammers. There is always a chance those members can request a post review from the person who tagged them.

If that member thinks that the person improved his writing and should given a chance, then he may delete the feedback. It depends on the person who got the feedback and who gave the feedback. It's not permanent if the member can change his writing behavior.