2 sqft is small, almost factory bird req's.
And remember, the square footage floor space of the bottom of the A frame is not the same as the upper level,
and you lose part of that upper level floor space to the 'door' the chickens use to get up there.
But I think the head room in the upper level is really the most restrictive part to the functionality of the A frame,
maintenance accessibility looks a nightmare to me too, but my knees don't bend well.
Rule of thumb around here is 4sqft in coop and 10 sqft in run......
......which I've found to be bare minimum in my situation as my birds are spend a lot of days in the coop in winter.
Even if you free range most the time, there will be times when they have to stay in the coop because of weather or predator events.
A frame's are attractive because of less material costs and they're cute, they might work OK for a few hens.
........and they will make great brooder coops once chicken math hits, some experience is gained and one constructs a larger more easily accessed coop/run.
JMHO