That doesn't jive with anything described in this thread. We wear earplugs, because they are noisy "to us". Bikes all meet certain volume limits from the factory. So do cars. (they are in fact often the same levels..) You have bikes on the brain, think any high reving, 4 cylinder is a bike, and are happy to point your finger at it. But you also... aren't hearing the dozens, hundreds, of other bikes that are going by.

A honda S2000, any Civic type r from before 2020, are going to make some very similar noises if some jerk decides noise is better than enjoying your drive. I strongly suspect you're blaming bikes for wankers with $50 tesco cherry bombs on their panda.

Just a kilometer? Look, I'm 3km from a major highway. And 2km from two different rail yards. I can hear anything with a missing muffler, and I hear trains at high idle every day. The fact you think it's "just" 1km for the jerks? that also shows you just don't know the subject.

I have several decades on my ears. "I" am the one who hears the things. Case in point, some dropped pixel 3 earbuds were on the ground, and the only one who could hear the music playing was me. And "I" am the one with the noisy hobbys. I protect my ears. Honestly, it sounds a bit like YOU may have some hearing damage? Do you keep a fan on in your bedroom at night? is it one of the 10" or smaller ones?

I get wanting quiet. But I also think your calibration is off.