I have been in many games where people meta-clear themselves or others just because they say they could never kill someone n1 or whatever. 1, it can trick newer players. 2, it can form unfair teams of people that assume, "Oh they could never kill this person so they aren't mafia." Meta-clearing can unfairly influence games. It has caused me to lose and win games unfairly. Clearing someone because they can't kill someone just because they have some sort of tie to them shouldn't be allowed. It has happened multiple times in games and makes them no fun to play. It is definitely a form of outside influence since it is something that doesn't relate to the game and affect the outcome. It isn't stated in the rules as OGI unless the meta is clearly shown on their profile, which doesn't make much sense because someone could have a meta without posting it on their profile. Faking a meta-clear should also be against the rules. Join the petition to make meta-clearing OGI.
To put it in a different perspective, one of my comments is, "Think about it like if you were to kill someone irl, you wouldn't just be shoved out of the possibilities of murderers because you love them or know them well, you will still be put on a questioning list etc."