JR will go wherever he can make the most cash/best venue etc. If the shyt he put on the field in 2010 doesn't convince you he doesn't give a damn about the fan base nothing will.
JR is a stodgy businessman for sure which led to to 2010 debacle. Wanting to set an example to the rest of the league etc...
But he is fiercely loyal and probably 5 years from kicking the bucket. He isn't moving the team or going anywhere.
Plus the current rules in the NFL say that an owner must make every attempt to rectify a bad situation in the current locale before they move. We currently have zero issues with the franchise and the franchise has zero issues with Charlotte. The panthers will get their funding don't worry.
If you want to fret about something, fret about the next ownership group.