Surprised it took so long.
Around here (Indiana) it’s been 10% ethanol most everywhere since the 90s.
You can still get 100LL at the airport.
You have my sympathies. Ethanol is horrible, ruins engines, and decreases gas mileage. Oh, and it probably pollutes more than real gas does. Brought to you by the tyrants at the EPA and enviro-whackos.
Come on down to Oklahoma. We can still buy real gas at many stations.