Saying "No ____" is complete exclusion. You're not open to anything or have a greater liking over other options because there are no other.
I have my preferences too but I can be sexually attracted to any... so I guess that's not a preference to some of you guys idk, gays are weird. I can acknowledge when an attractive person is an attractive person no matter what the race is. Being attracted to someone is not always sexual too. You can find anyone handsome or understand how someone else would but doesn't mean you want to jump their bones. I mean does it really go against your grain to at least acknowledge when someone has nice physique or something?
But anyway, it's not hard to just ignore those fools on those apps, they're not worth your time.