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.
because that was not flood
idk what's going on with the ru mods, but 7 consecutive posts (as it's shown in the OP) with baseless insults and threats are definitely a flood.