I read some of your posts, you are on the right path.
Have you given up trying to reason with these guys?
If they have never had the experience of training with someone that can do the internal on them, then they don't believe it is real or excists. I think it is kind of useless trying to reason with them, you have to show them in person.
Been reading some of your posts on Chen Taichi and CLF.
I'm from NYC as well.
If you have time, maybe you want to meet and talk/train in kung fu.
Always looking for kung fu friends.
I study Chen Style and some southern fist in the past.