Autoshenanigans did some tests recently and most of the E10 fuels didn’t contain as much ethanol as stated.
In cars I really don’t see stale fuel over 6 months or so in a modern sealed fuel tank as too much of a problem tbh. I did an experiment and left a full tank of fuel in my lawnmower over winter and it started after a couple of pulls no problem at all. Imho the stale fuel issues are overblown unless left in environments where damp can get at it or if left for years.
Just my experience anyway fwiw