The critical components affected by ethanol are the elastomeric seals and gaskets - possibly including intake manifold gaskets and head gaskets, but certainly all fuel system components.
Especially for older systems not designed for use with ethanol.
Rubber fuel system engineers know this. But our world is run by politicians, voted in by a culture of irresponsibility.
I'm sure the Gov't will come up with a compact florescent bulb type solution. Maybe a $7000 government subsidy to buy a $24K 12 hp ethanol compliant Craftsman lawn tractor.