We see this from time to time in our area. It's gotten pretty crowded with sportbikes compared to what it was 10 years ago so sometimes they feel like they have to crack down. It's not likely they'll patrol the area for more than a few weeks. Usually they don't have enough manpower. An even bigger and more disturbing problem around here is when local residents pour oil on the roads - folks are gettin hurt.
As far as tickets for a modified exhaust, I'd be pretty pissed if they weren't citing Harley riders too. I can't remember the last time I saw or heard a Harley with a stock exhaust. Most run straight pipes as a default setup which is probably a necessity. At least sportbike pipes have
Bottom line: be as courteous as possible to the tourists and the locals. It only takes a few complaints.