"Why wont anything be done to address this subject?" Probably because a lot of cops and firemen ride loud Harleys. There is often a really loud Harley (stright pipes and mini ape-hangers) parked at the fire house on Whitney Ave.
Some states have passed laws forbidding the replacement of motorcycle and car mufflers with non original equipment or equivalent; Connecticut should do the same.
Generally, the guys who ride Harleys are fat and old, you wouldn't think that they would want to attract attention to their jiggling beer guts, sagging man boobs, and thinning hair pulled back into a ratty, thin pony tail...