I can see that happening where someone is a huge fan of an artist from the beginning(or very early in their career) and them becomming mainstream and a whole bunch of new fans jumping on board.... I have kinda felt like that not just about jack but about other bands too… kinda like “I knew of him first and all the new fans aren’t getting his message, they like him just because now it’s trendy” kinda thing… but you just gotta think that music is for everyone, and if an artist didn’t want it to be for everyone they wouldn’t make the music in the first place.
As far as Jack with his privacy and being in the public eye, I think that probably does bother him, I know it would bother me. When anyone goes from being just another person to being an international star, that’s gotta be uncomfortable.