Ain't that the truth!
I run 90 octane ethanol free in my paramotor - has a 185cc single cylinder, single spark 2-stroke. I premix with Amsoil Saber at 66:1, just copying what someone who instructs on paramotors, runs his whole school on it, plus his personal machines for years has run. I don't know how he came up with that specific, odd number, but it's been working for him, and working for me.
That said, my buddy I fly with runs 87 octane pump gas (10% ethanol) in his Rotax 582 powered, powered parachute. I told him he's nuts. At one point in time he was removing the ethanol himself using water as mentioned ... BUT, he screwed up one time and dumped a big slug of water into his fuel tank. After the engine quit at the worst possible time - on climbout - he stopped that practice.
He has big tanks on those things. Much bigger than the miniscule 3.5 gallon tank my paramotor has. I get nervous every spring when he fires it up for the first time of the season, wondering if it's going to crap out on him again. I even offered to grab some for him while I was up north (we have no E0 available at ANY roadside fuel pump in MA). He doesn't want to spend the money.