It's utterly unhinged to avenge a grudge against a stranger for a perceived slight 8 months ago. How angry and festering do you have to be to do that, and to even remember it in the first place?
If you’ve got a job you enjoy doing but it’s being ruined by a few arseholes you’ve got a few choices;
Change job - shame because you actually liked the job part
Smile and put up with it - won’t last long
Try and change things - might as well try that before you give up, no?
The parts of her job she doesn’t like are not fundamental to her role. She’s a performer and makes music, she doesn’t need to be nice to paparazzi or accept stalking
And why does this only apply to the celebrity? What about photographers? By your logic, why should paparazzi have to put up with childish, spoiled divas - who occupy a more powerful social and economic position - publicly ranting and raving at them at their place of work? Photographers would be just as entitled to improve their lot and object to mistreatment.
Paparazzi only have to take photos of celebs. There is no requirement to be nice to celebrities either, by your logic. But I suspect you only apply your reasoning to Chappell because of classism. Photographers occupy a lower social rung, so they have to just accept their superiors giving them public dressings down.
Paparazzi are not stalkers. They have a symbiotic relationship with stars. You say the parts of her job she doesn't like are not fundamental to her role, but actually they are. Without fame and all that comes with it, she wouldn't even make a wage with her own music. She'd have to eke a living doing covers in pubs, clubs and weddings, like other non-famous singers (or live off Grandpa's money).