Do you have this same energy for every hazardous occupation? Like when workers protest dangerous working conditions? Do you also advocate they "could get safer jobs?"
First of all cops in America don't have to do nothing. Being robbed or murdered? Nah, let's look other way. Mass shooter on the prowl? But he can shoot at me better hide. White person in expensive car, nothing happened, nothing to see. But as soon there is money to be made through civil forfeiture, every cop is all of sudden a brave law defender. There is no money in law enforcement, but a lot in legalised theft.
If the tint is illegal, cite the person and force them to remove it right there.
If we aren’t going to enforce the law, remove it from the books.
Sometimes they'll let you tear off the tint and avoid the citation.
Technically they should be ticketing everyone that doesn't use turn signals either but there are only so many cops, so many hours in the day, and more-pressing issues to deal with (accident reports, domestic disputes, etc.).
Basically, if it's something that would just be a ticket and a fine, and not an arrestable offense, chances are good they have something more urgent to deal with. Even if it's something they could make an arrest for, if the prosecutor is just going to dismiss the case, why bother?
Chickens are coming home to roost after the last few years.