Yeah man, it's the cyclists who are the problem, right? https://pubmed.ncbi.nlm.nih.gov/39986875/

I grew up riding dirtbikes in a non-helmet-required US state.

>Many don't wear helmets because doing so might make them look like "fairies" to their friends in the outlaw biker gang.

I now live in a state which requires helmets for all riders.

This is a good idea – for exactly the reason you stated.

> maintains a standard following distance (ideally 3 car lengths on an interstate)

3 car lengths is a ridiculously too close following distance at freeway speeds.