People aren't calling Zayn a prick for no reason uno, they are calling him a prick because of how he's treated girls since becoming well known..
Do you know how many girls he has made feel like shit? Do you know how many girls have wanted to attempt suicide because he has made them feel so low in themselves they feel like lie is not worth living?
I'm guessing you don't, because these girls are too afraid to come out and tell people because they know everybody will jump on them and call them a liar/attention seeker.

If people were hating on him for no reason, I'd understand ur point.

Liam is the most genuine of the group, hes lovely.