The way we insult

I have become increasingly aware of the way we insult or compliment each other.

“That’s so gay”

“You look young in that”

“You’ve lost weight”

“You’re such an old woman”

or this one, “like a girl”

Why does it these seem that insults or compliments are ok in our society? Would it be ok if we made similar racist comments?

It seems to me that there is some subliminal agreement that being male, straight, young and thin is the ideal and everything else is substandard.