Sounds and reads more like an ad promoting Sta-bil, and is also full of misrepresentations. With vehicles, if 2000 model year and newer, ethanol blend fuels' biggest shortcoming is the decrease in fuel economy over pure gasoline. The reason is simple, ethanol blended fuel contains fewer carbon and hydrogen atoms, therefore less energy, therefore more fuel is required to do the same work (move the vehicle down the road). Ethanol is not "corrosive, but is hygroscopic, meaning it will bind to any moisture in the fuel system and result in corrosion of fuel system parts not made of material that resists corrosion.
There is some truth to the claim of potential fuel system/engine damage to small engines and 2 cycle engines in particular (I had a 2 cycle blower engine seize up on me). Any fuel additive designed for use with ethanol can help, and draining power equipment fuel systems for prolonged storage (such as winter in the North) is a huge help.