In particular, whatever politicans say, the Republican-controlled House has a rider in the FAA authorization bill which requires airports to continue selling leaded fuel for propeller aircraft forever:
The House version of the bill would require airports that receive federal grants to continue selling the same fuels they sold in 2018 in perpetuity.
While the Democratically-controlled Senate requires a phase-out:
The Senate version would require these airports to continue selling the same fuels they sold in 2022, with a sunset date of 2030 or whenever unleaded fuels are “widely available.”
There are approximately 167,000 aircraft in the United States and a total of 230,000 worldwide that rely on 100 low lead avgas for safe operation. It is the only remaining transportation fuel in the United States that contains the addition of TEL.
TEL meaning Tetraethyl Lead, it is used as a fuel additive in avgas to increase octane ratings (required for safe operation of engines).
Now, the post says "propeller" aircraft but this isn't exactly true.
Turbine-driven propeller aircraft (Turboprops) don't use avgas.
The unleaded fuel they're talking about is probably G100UL and that's only been around for like a couple years.
Nobody wants to use leaded fuel (unless someone inhaled too much of the emissions) and it's on the way out whether our representatives want it to or not.
"required for safe operation" aka we're a bunch of fuds that refuse to change anything.
They could easily phase it out, but there's no political will to do so.
It would cost money to find a replacement and those poor private plane operators would have to suffer the costs, boo hoo.
Anyone living within 1 mile of an airport is being contaminated with lead in the air on a daily basis.
I'd wager that the larger portion of aircraft owned belong to institutions like universities and other sources of flight education as well as companies which own fleets of these things.
Some commercial air travel still occurs using these planes also.
You'd be surprised at the kind of people that own private aircraft, they're not always the kind of "throw money at my problems" people that'll just lobby the government (they probably don't even have the money to do anything), bigger interests would likely focus on switching to a new, proprietary, and expensive fuel as a political issue.
The EU would tackle this by telling those aircraft owners to switch to unleaded fuel somehow, e.g. by fixing or replacing the engine, or put it out of business.