Ive heard things too, first that he doesnt like to work with people of color, especially black people, same with Paul Canon back when he still did porn, both of them did one scene with a person of color and that was it out of all the years theyve been in the biz.
Second thing I heard is that JJ is a HUGE diva, which I can believe seeing the way he carries himself. Plus other porn stars and directors he's worked with have said he's difficult as well and they werent talking about the size of his dick. He acts like he is the number 1 pornstar just cause he's hung.