I despise overly loud pipes - like, you have to scream loud.
But,Ive been riding a bike a lot as well.
Way too quiet exhausts (like EU is constantly pushing on us) are dangerous - ive seen it myself - my dad with a louder exhaust passes with no issues and I, silently, get cut off and nearly run off the road by a guy that assumes that mirrors are for pussies.
It happened quite a few times already.
Annoying lights help. I ride with some quite bright led lights I got off of advrider.com and I think they help. You could get the flashy kind that bicyclists use, those definitely make them more visible.
If you are in a modern EU/Korean/Japanese car, you would have to be rather unlucky or going fast if anything was to happen to you. Also,it takes a lot more to actually drive you off the road - you can literally push back.
On a motorbike all it takes is a bump,and, you have to be lucky not to end up in hospital.
Btw in no way im for window rattling. However, EURO4/5, I would not be surprised if my vacuum cleaner was louder
