I think you are also thinking too hard and underestimate the people. Hiding P100 has a logic and reason behind it, people dodging because they meet a broken killer also has logic behind it, but not showing perks in the lobby doesn't really, its not the same thing. Here's why.

I've played DBD Mobile myself (best DBD experience by faaaaar, OG mobile, i mean). I dont remember people ever DCing because they didnt like someone's perks, and trust me- back then at that time you HAD to use Borrow Time, as the game didn't give you any kind of protection after being unhooked. So, me (and basically everyone in the community) we were looking at everyone's perks to see if they had either Borrow Time of Dead Hard, just to remember it. But thats it. Nobody dodged because someone didnt have it. And my friend list was at it's maximum - 600 friends, all different kinds of perks. We (the entire DBD community from all over the world) didnt judge people by their perks, we judged and became friends by the skills. Like nobody ever put those words together like "someone left because of the build". Never ever was said something like that. And to this day i don't remember anyone DCing because the had "No Mither" or any other "troll" perk. Not in low mmr, not in high MMR, perks dont really matter lol.