If these lazy and inconsiderate parents can't get up and walk 20 feet to the lavatories, they shouldn't be surprised when people get angry at their rudeness, stupidity and insolence.While I appreciate your kind words regarding my legendary diaper changing skills, your comment leads me to conclude that: a) you have never actually changed a diaper yourself, or B)you have never been in an airplane lavatory, or c) both.
I do not believe that it would be possible to change a diaper in an airplane lavatory, given its small size and lack of flat surfaces. Even if one had the necessary skills as a contortionist to do it (which skills I sadly lack), I do not believe it would be safe for the child.
Besides, if the only people in a row of seats on one side of the aisle are the infant and parent, that in and of itself is pretty damn private.
I done a) and b) in spades. On a quick google search, I found 6 carriers that have tables in the lavatories. Most airlines accommodate the problem in one way or another, but the crudest and most inconsiderate way is to change in the cabin with other passengers around. Would you consider somebody wriggling out of their soiled depends next to you and wiping their hands on the dining table or arm rests to be practical? You may not be so coarse, but there are millions who are. This is just one way that we're becoming more like third world countries - next thing will be to tuck the soiled diaper in the magazine pouch on the seat in front. It WILL happen if it isn't already a common occurrence.