I seriously hate this, even on a main street, and I'm fairly sure everyone hates them as well ... motorcycles in general tend to be loud ... that's OK ... its those that are 10 times louder then buses when they go by I have an issue with, I'm sure it exceeds what's considered to cause damage to the ear as well, now given this only last for a couple seconds it doesn't but anyway ...
Though I wouldn't condone this, on a couple occasions, I've seen someone on such a loud bike, drive around (and they're typically obnoxious drivers at that), park and go into a store, when people walk by I've heard on separate occasions, "we should trash that bike" or something along those lines ... and when hearing that I typically laugh but agree with them.