At the end of the day if someone is not attracted to a particularly race for what can be classified as racist reasons, does it matter?
I wouldn't say being attracted to a specific race is racist. Attraction is very much a base level thing for human beings and if you're attracted to a particular type and not to another, it is what it is. You often cant control what gets your motor running.
Someone can dismiss a particular race from dating for ignorant or racist reasons for sure. But let's say that is the case. Ok now what? Do you want to shame them or have to work to try and make them be attracted to you when they wouldn't be into you on their own volition? Why would you want to do that? Especially if they act not based on genuine attraction for you but because they were effectively argued into liking you.
I will say this, if a chick for example isn't into black guys, just saying I'm not interested enough. People make up white lies or hold back informatiin as a courtesy all the time not to be rude. On one hand if a chick specifically says "I'm not into black guys" I'll be like ok whatever and keep it moving but there is a certain level of disrespect in that sense in that it's not enough to just say I'm not interested, I'm going to let you know I'm not interested because you're black .
Either way though, when it comes to dating it's still best that a potential partner is upfront and geniunely into you and it's best not to even waste a second with someone who might not be attracted to you for whatever reason including race.