Here’s what I got that’s at least 20 yrs old run its whole life on Indiana E10 (FWIW all our gas comes from BP Whiting):
John Deere tractor (Kawasaki)
Wheel Horse tractor (Kohler)
Sears mower (Tecumseh)
MTD mower (Briggs)
MTD trimmer (Mitsubishi)
Sears gen set (Briggs)
Troy-Bilt tiller (Briggs)
Unkn power washer (Honda)
Polaris ATV (Subaru)
I haven’t seen any of the problems you seem to have. Maybe we got better alky here in corn country.
All of those (except maybe the Camaro and Polaris) are low RPM low power low heat engines. These seem to be less prone to the problem - but it’s a huge problem for motorcycles and boats for sure, and it’s not unknown even with lawn equipment.
Just because you’re not having problems doesn’t mean that problems aren’t widespread. Also, when was the last time you checked inside the Camaro’s fuel bowls?
More info re: the corn shit gas damaging stuff: