Originally Posted by GUWonder

Not necessarily. Different caretakers of different children are dealing with different circumstances than some others face.

And what about the times when the FAs tell the passengers to not get out of their seat? Sometimes that has applied for the entire duration of the plane being in the air. There are times where, disgusting as it is, conditions are such that it may actually be less disgusting for a diaper change to be done in the seat than to not be done at all until the passengers are next allowed to use the lavatory. And I'm saying this as someone very much grossed out by diaper changes and such stuff in open public areas with limited/inadequate cleaning and disposal facilities and who would likely be skeptical about people doing disgusting things when ordinarily there may be less disgusting ways to deal with the situation.