In first place, why would you want to merit your self.that goes against the merit system op and it's not possible except you are thinking of meriting your alt accounts which if you are caught might get you banned or tagged.
I think you are misinterpreting the forum rules at some point. In the first place, meriting oneself is not possible, so something that is not possible can't break a rule as there will be no rule for something that can't even be done.
Meriting one's alt account is merit
abuse, for which the abuser might get the punishment of getting their account
tagged, but I don't think there is anywhere in the forum rules that states that they will be banned unless I miss those parts, and I will be glad if you can share the link to those and let me correct my path.