Ethanol is a money maker for small engine mechanics. Heck, even my 2012 Acura warns that if I use more than 10% ethanol by volume, the warranty for my entire fuel system is void.
BS propaganda, pure and simple. AAA is in bed with the API when it comes to slurring anything that competes with gasoline.
Your 2012 Acura's misfueling warning is appropriate as 10% ethanol was the highest concentration in 'regular' gasoline when the car's emissions system was certified. Keep in mind, however, that a fuel system safe to use 10% ethanol is also automatically safe for 100% ethanol. You can run your car on 50/50 E85/G90 today and you'll only notice the small fuel economy drop.
My non-flex fuel V6 Ranger runs better on E85 - it runs cooler, stays in gear longer on hills, and is smoother. Starting is normal until the temperature drops to the mid-40s, then it could use a primer. In the winter, I drop back to 50/50 E85/gasoline.
Small engines - especially 2stroke engines, and especially especially
2-strokes that use pre-mixed gas/oil should not use ethanol mixes. The fuel systems are not guaranteed to be alcohol safe (unlike cars - which were updated well before the 2000 model year) - and 2-stroke oil will not stay mixed in alcohol blends. But don't confuse these with cars - small engines can easily be adjusted to run on straight ethanol by replacing or drilling the carburetor jets, but they don't have the automated controls modern car engines have.
There's a legal and regulatory reason why running E85 might be considered 'illegal' but there is no technical reason why any car on the road made since at least 2000 cannot burn E15 without modification.