I normally can't see tiny motorcycles in my side view mirror in the split second they appear there while zipping along between cars in "no lane". I look for cars or motorcycles that are actually in a lane.
We aren't talking about the slow and careful movement which is still illegal and goofy, but about the genius going 40 to 50 (even 30) on the crowded expressway.
He gets whatever happens to him and it's not the fault of people who don't see a cycle where is should not be.
Motorcycles are inherently dangerous when mixed in with cars and trucks and vans even when driving safely and legally. It's suicidal when acting like a child on amphetamines.
So, since we are asking questions,,you are one of the people I am describing? Just curious. (like you)
When I lane split it is on the shoulder of the road 90% of the time. I leave myself plenty of escape room from less than attentive drivers.