Like I said, there is no point on discussing it, because there is always somebody who thinks someone else is wrong.Nah when we like to imagine sex with redheads it is our kink. We like red hair ... how is this difficult. Incest is a fetish (sex with relations) redhead is a fetish (sex with redheads -- real red is better but fake red is also good)
And just because you imagine having sex with a redhead DOES NOT make it a kink.
With your logic, if I would imagine having sex with an asian or a dark skinned girl, suddenly would turn their ethicity into a kink?
A kink/fetish is something you sort of chose to have and could "turn it off".
Something which is in your genes and your born with it, that you can't change if you aren't super rich like for example Michael jackson.