unless you live next to an airport or even remotely close to it then lead is being sprayed all over you, your car and home, daily for THREE DECADES NOW no rush, not like it's poison or does permanent damage to your health/IQ https://www.nbcnews.com/business/business-news/leaded-gas-wa...
Yeah it's absurd how aviation is somehow exempt from these rules, especially since piston engine aircraft carry virtually no vital role in anything except people flying them for fun. There have been viable alternatives for a long long time now. I guess people who have money for personal airplanes also have the money to lobby when it matters for their interests. Pricks, I hope they die of dementia.
Not to mention they're frequently used for air ambulance flights, survey work, and law enforcement. The "satellite" view on most online mapping tools is recorded from a piston aircraft.
Also, the current proposed plan is to migrate off of leaded gasoline for most of the country by 2030, which is actually quite ambitious given that acceptable alternative fuels didn't exist until literally a few years ago.