Wow, I would be very frustrated with that also. Our gas in Canada must be a little more stable, although it isn't like the old gas here either, and we don't get the constant heat here like your part of the world.
I have quite a few small engines around also, the types that get infrequent use, lawnmowers, line trimmer, chain saw, leaf blower, snowmobiles, boats, etc. I have never experienced those starting difficulties after they sit. Had my Husqvarna saw out first time of the season last week, 4 pulls and it was running. As I type this, I wish to make clear, I do not dispute your comments, just sharing mine.
I have noticed stored gasoline turn yellow after not long periods of sitting, and agree, my Dart requires a bit of cranking after sitting for a week or more.
I'm sure you are doing this already, I have found dosing the fuel with Seafoam greatly helps stabilize stored fuels, and keeping fuel systems cleaner.
Great post, again I state, if I experienced those issues, I'd be beside myself also.