It depends on the individual. Some people are very suggestible. Others, not so much. I have Asperger's and, supposedly, people on the autism spectrum are nearly impossible to hypnotize. So far I've proven immune to all attempts, and I've tried many. Autism seems to be somewhat over-represented in the ABDL community, as well, so a lot more people are probably going to say it doesn't work than if you sampled a larger group.