Exactly that. I bet most people looking for "redhead" aren't after makeup or hair care advice.

"White is the default" is still racism, and its existence doesn't make "Asian == porn" any less racist.

And would racism not imply that people would dislike and therefore not search for this term/produce this content?

:s in this context does that make any sense? Specificity of porn query/popularity of query/result?

First of all I didn't say if it were racist or not. Secondly the default of mostly white women is because most movies/clips are of white women. There's nothing racist in the way the results are distributed. You could argue that there are more white women in porn because of racism but that is another topic. I'd like to hear how you see returning mostly results with white women on a search of "redheads" as racisme though.