Our tastes are not formed in isolation and our actions affect more than just ourselves.
And the rape fantasies mentioned upthread are an excellent example of this.
I'll confess to having had fantasies that are generally categorised as rape fantasies - and I use the word 'confess' because I do feel shame connected to this. I've been raped in real life, multiple times, by multiple men. The fantasy and the reality are worlds apart, obviously.
But I was never fantasising about actually being raped.
My fantasies were informed by two things: tropes picked up from exposure to pornography; and the eroticisation of power imbalances that is so rampant in our society.
I've been conditioned by my society, my culture, and my personal experiences to get off on men having sexual power over me.
This, obviously, has serious real-life implications: for my psychological welfare; for my sex life; for my interpersonal relations with both men and women.
I feel shame about 'rape fantasies' because I know damned well that if I indulge them, I'm eroticising my own oppression and training myself to have a positive sexual response to men acting on their impulses regardless of my wants or needs.
This is not a neutral thing. This is not a harmless thing. This is not a thing to be celebrated or accepted or tolerated on the grounds that it's just a fantasy and isn't hurting anyone.
The imperative "don't kink shame!" is an attempt to distract me from this analysis. Functionally, it encourages me to rationalise and indulge in sexual fantasies and responses that are actively detrimental to me. It is one of many mechanisms by which I, as a traumatised survivor of repeated sexual violence going back to early childhood, am encouraged to submit to yet more of the same.
Well, fuck that shizzle.