no, for example the described attacker (due to his mental peculiarities) can (and he does it hard and regularly, simultaneously laughing at us as it given above) continuously make posts in threads, so the solution must be more than just enabling moderated option.
hey guys i am that bad flood attacker yes yes do not be surprised

so i have a words to talk
escapefrom3dom you're a liar or don't understand what a flood is
why am i flood
you closed old thread
[ANN] DeepOnion ONION🌍Private цифpoвaя вaлютa🌍 Peлиз DeepVault✅ because i did flood as u think
but why mod didnt delete my flood? because that was not flood
in new self-moderated topic you just keep deleting
uncomfortable questions about your scam project which you supervise
Mods dont delete stuff from locked topics afaik. Thatd be useless and time wasting to say the least.
Unless its a scam link or something itll go unaltered once the thread is locked.