Player Hryusha receives a modkill for the action "nh" (naughty :D). Afterwards, he realizes that he shouldn't do that because he will receive a modkill for it.
The strict wording of the rules applies, within the framework of this forum, to tournaments, but not to games that primarily serve as entertainment.
And preventing this in such a way is generally unrewarding, because next time there will be another loophole, then a third, and so on.
And if the GM decides, then his decision is equivalent to any rule in any case.
Yes, there is also such a thing as doubt. For example, it's a pity to give a modkill because it's just a game, or a novice GM is afraid that the players will then express complaints to him. Overcoming such doubts will also be helped by a modkill in some previous game based on the logic of "it was already done like this".

Барон "Vampires"
Отдай свои прошлые сны,
В сомненьях себя обрети,
В бешеном танце душа кружится!
Не думай, что будет потом,
Здесь и сейчас мы живем,
Стань хоть на миг сам собой, слышишь!