It used to be that if you weren't going to use your bike for a while it was always best to leave the tank full even if you had to drain it and put fresh fuel in when you came to use it. Now -who knows? Maybe the ethanol thing will turn out to be a damp squib. I hope so. It's only 10% after all.
But the thing with having to keep specialised cans of fuel reminds me of when diesel cars started to become popular. I always used to keep a 2 gallon can in the boot because not all filling stations had diesel. Of course there were many more filling stations then.
It may come to a stage if the percentage of ethanol in fuel increases that you will need different grades of fuel depending on the age of your car or bike, and newer ones might cope with it but older ones will not. Once the majority of cars are electric the momentum will be towards making keeping a petrol car more and more difficult, with grades of fuel that you need not always available, especially if there are many different ones.
It's not a new phenomenon though. There was a time when you could get ready mixed petroil which came out of the pump for petroil 2 strokes.
In the 70s there were many 2 stroke bikes and some cars like Wartburgs about but even they went over to pump oiling for the sake of convenience and emissions. I had quite a few such bikes myself. Then in the nineties EU emissions tightened and new 2 strokes were restricted in size so you tended to get small scooters allowed with 2 stroke engines but no more MZs etc up to 300cc for example. MZ sold manufacturing rights to Kanuni in Turkey and they sold their version in countries outside the EU. So It went on, engine size limited to 125 then 50cc. Easier to use someone else's 4 stroke engine than redesign your own 2 stroke engine with fuel injection to improve emissions.
Next may be a reduction in the size of petrol engines in cars, or maybe reduced power and better emissions to accommodate more ethanol or other additives in petrol. Maybe people in the new electric age will remember petrol engines as unreliable, low powered machines with expensive and hard-to-find fuel? I think people like myself have lived through the best (and maybe the worst) of the age of oil.