alt Hacker NewsWell let's face it, not on the same level but even four-stroke tend to annoyingly noise, saying this as an owner. A screaming 2 stroke engine is super annoying but the bass of say, a Yamaha T-Max is also super annoying and will transmit accross walls even better. And so many people run noisy aftermarket exhausts.
This is true in the USA where motorcycles are expensive toys. When I visit India, most motorcycles on the road seem to be very quiet in comparison. The constant sound of horns is more annoying than the engine noise.