Lets not heap all the blame on mothers in law. The ratio of guys who openly tell me what physical characteristics they like, to those who don’t tell me what physical characteristics they like, are 95:1. We cant blame only mothers for what their sons are saying.
You are being misleading. You say they tell you what physical characteristics they like, as if they are giving you a list describing some fantasy person.
Be honest: all of them are just saying one thing. Thin.