We may already have this law. If the manufactures makes claims about this LED, then that this attack is possible mean a lawyer can force them to recall and fix everything.

We have to be realistic though. We can't even get a law requiring right to replace a battery on our own iPhones...

We can’t? Then what is this? : https://environment.ec.europa.eu/news/new-law-more-sustainab... ?

Go to https://www.ifixit.com/Device/iPhone, then search for your iPhone's battery replacement guide.