I fly a lot and let me put in context one of the “protections” as far as parents being seated with children or at least how it works on Delta.

If you buy their lowest fare - which they try their best to steer you away from and they say prominently in big bold type avive where you order your ticket that you will not be able to choose your seat - you cannot in fact choose your seat. Then parents complain and people who did pay to choose their seat are forced to move so kids can sit with their parents.

The rest of the items that the airline wants to roll back are foot guns for infrequent travelers.