"I need a gf with big tits" is definitely hella objectifying and devaluing another human.

We're complex beings and there might be some preferences in a matter of sex and appearance. I used to be a good friend to a closeted married gay. He loved his wife, but he has decided to divorce her and become openly gay. He had his preferences, but it would be much easier if he accepted these preferences and had chosen a partner according to these preferences. Same with tits I believe.