Your theory that motorcycle max speed saves lives is simply unsupported by any data; if you can't see it, it's just cognitive dissonance - you've made up your mind that you like loud speedy bikes and are just looking for justifications.
(don't get me wrong - I fully understand that a slow motorcycle is no fun. But it _is_ a dangerous vehicle - own that, don't use loud noises and other means that inconvenience people around in order to feel slightly safer, that's just inconsiderate. )
On a personal level, the world you’re describing sounds like hell to me. There’s already way too much noise pollution. I ride motorcycles, I agree car drivers are inattentive to non-cars. Slowing down is the answer for noise and safety, save speed for track days.
