With newbies or recently woke up account making false accusation to the ANN thread of the site, it will only try to derail the ANN topic. So it's better if all ANN thread are "self moderated", so useless post like that can be deleted and it will make the ANN thread clean.
Maybe some people would say that it will defeat the transparency of locking the thread, hell no, a user that was scammed can always make a scam accusation on a specific board, attached all the necessary document and the community will hear it.
As far as I know, there's no way that the thread creator can self moderate a thread after publishing it. I doubt that Betcoin will delete this thread for the sake of making it a self moderated thread.
There are a lot of this newbies who are doing accusation on ANN thread of other casinos and not just only here. We don't know what is happening on the background but there might be someone paying someone to derail the reputation of casinos in this forum, it's just my speculation because there are a lot of non-sense accusation of newbies that are made poorly which made it unbelievable. Casino representative ignores those scam accusations, also forum members especially if it doesn't make any sense. Weak scam accusation doesn't have proofs or anything that can stand their claims, newbies who just want to mess up on someone casino are the one who are doing weak accusations.