Just not worth the hassle to worry about Ethanol, over 35 yrs of driving/ownership of gas powered equipment and vehicles I have not as of yet had a single FAILURE caused from Ethanol content in fuel..
Don't get me wrong, I am NOT "pro E gas", far from it, just saying that MY own results and analysis does not "line up" to give me any substantial "proof" that E gas damages or harms fuel systems..
My experience mirrors yours.
FWIW, when I maintained those 125 engines on a yearly basis, I needed to store them for 5 months over Winter. My SOP was to fill the tanks right to the top with E-10 and stabilizer, making sure the engine had been run long enough to get that mix through the fuel system. This system worked flawlessly except for one series of Kawasaki engines. All of those 8 engines sputtered to a stall in the Spring. Inspection turned up a clogged main jet in each engine. I found that the carburetor had an air mixing jet that exposed the gas to constant air within the float bowl. The cure for that was the same as Honda generators, drain the float bowl. If an owner was worried about oxidation in the float bowl or carburetor passages, filling the float bowl with mineral spirits, kerosene, or white gas would take care of that.