Supporting evidence that I felt greatly bolstered my theory- Not long ago I went for a kiss with a girl I barely knew. I knew from body language alone she wanted that, and I was right. She later explicitly told me how happy she was that I had been bold, taken control, and made the leap totally out of the blue.
So at least to my figuring, it isn't like these people are fundamentally misguided. It isn't like courtship is supposed to be started with "May I stroke your hair? Ok, now I'm going to kiss you, is that Ok?". They are probably just really bad at navigating these waters.