no there is no fix to this that I've found
That's a shame. Try getting a short piece of hosepipe and fitting it over the extender piece. Does that help? I suggest this as an experiment, not the final solution.
I really do not get your point of difficulty.
I have never had such troubles, except maybe a bit of try before for the first few times when bike new for me. And I would say rather to recover the sidestand than to put it down.
System is pretty exactly the same as in the two bikes with heel-toe platforms I owned before.
I need no special effort even to make the pictures I posted, using both hands to handle the phone.
It's all a matter of pointing left foot out, placing heel in the area near the rear gear lever near the crankcase, and push down. Easy and fast. I can't even imagine a personal measure or limits issue that could make that hard as foot position is not rare or requiring any torsion - almost exactly the same point you place the toe in every mid control bike, but a bit lower.
A bunch of times pals (some clearly smaller or bigger than myself) that never used a platform before tried the bike and my simple instruction like "bring your foot to rear and push down" made a full result and comments like "ah, it is very easy" - never anyone finding himself in a situation like not being able, needing my help or something similar.
I would bet you are thinking it "harder as it really is" trying to set up a strange position, trying to do it watching with eyes where you put the foot instead of simply using your body memory...
Maybe some people are just different...
