If I was complaining about my stuttering with someone and they said that my stuttering is cute/sexy/etc. I would be surprised and have a positive feeling. But if I was talking and in the middle of my speech they said my stuttering is cute I would feel less secure because sometimes I don't realise that I'm stuttering and the fact that they noticed it makes me less secure. I would say it is pretty much like “I like your accent.” if the person hates their accent, and when you tell them that you like their accent, you just asserted that they have an accent even though you said it is cute. In the end of the day it differs from person to person and on how they take compliments. I hope my accent analogy helped.