There's a tendency found in humans to boil everything down to one thing and make it simple, when things have many factors, and this is one of those examples, while it has some truth in it, it treats that piece as the only piece in the puzzle and advocates a theory. What I'm saying is, women don't only screen men out on how nice they are to them, just like how men don't only screen women based on their looks(we do it when our goal isnt forming a bond with that person, rather when it's to get them in bed, women do that as well).