forgive me for butting in, but this honestly sounds really cruel? like, this isn't even constructive criticism, this just seems like you're looking to directly insult someone for... whatever your reason is. i can only imagine how much this may hurt punchcar.
if this was intended to help him improve, you don't offer any advice, just that his art looks demonic and that he uses tropes(which, tropes exist everywhere, there's no real way to avoid them).
i'd first start off by wording this a LOT more respectfully, don't resort to insults because there is a real, living person behind that profile who may feel hurt by this.
second, maybe give suggestions to help him improve? let him know how he could improve his mouths rather than simply saying they're bad
third... keep in mind there's a line between helping someone improve what they want to do and making them do what you want to do. some styles are not for everyone and that's okay, but forcing someone to have your style is very rude and considering he's not doing anything wrong by simply having the style, it's better to just ignore if that's the case.
i hope you both have a nice day, but please reconsider how you go about these things.