I have been judged for being into CNC, DDLG and even for enjoying being choked 😭
Sadly this judgement is mostly from fellow women who assume a woman couldn't possibly be into these things by herself and that it has to mean a man forced me to pretend I am into them. I think this is a stupid take that takes away from the autonomy of women.
Also someone legit kink shamed me about DDLG saying that people who are into that are either p*dophiles or enabling p*dophilia. And that with the knowledge/specification that all parties involved are consenting adults, and they even continued insisting on this judgment after I also specified that there are no other inappropriate power dynamics/imbalances at play. That really pissed me off.
I think it stands for "consensual non-consent" but I do know next to nothing about that sort of kink so you may have to wait for better answers from someone else.
I had such a hard time with choking. I'm too afraid I would crush their windpipe, when I was in my 20's. I only really did the choking when she wanted my belt to do it herself. Self choking with a belt is a good way to die.
Now I have control and understand how to safely cut off blood supply and not totally close the airway.
But it's been a decade since I was with a woman last.