Why are some potential subs shocked when I as a Dom bring up boundaries?

I have to say something about this. Yes, this will be a short rant. I had been corresponding with a lady earlier in 2022. We were chatting about entering into a Dom/sub relationship or at least an encounter. When I brought up boundaries and even brought up a questionnaire, she quickly went dark. I figured I had just been ghosted and she moved on. Come to find out, she message me this morning and told me "I am a little uncomfortable talking about boundaries. Those are personal. I have never had a Dom ask me about boundaries before."

Either she has no experience being a sub. Or the Doms she is meeting with are full of it or just plain fake. I have been doing this for a while and feel that the foundation of any Dom, Domme/sub relationship starts with a discussion of goals and boundaries. Has that changed? This is not the first time this has happened. Why are so many potential subs clueless when you mention boundaries? I would think they would want to establish that before they play with someone.

I know some subs might have fear of ending up with a potential abuser and remain very shy. However, most abusers pretending to be Doms will not talk with a sub about safe words or boundaries. It just won't happen.