I would expect the airline to give you a token number of miles maybe 10,000 as a gesture of good will
I find most babies get on and go to sleep and aren’t much of a bother. But you occasionally get a crier. A crier with attentive parents tends to go to sleep a crier with parents not paying attention is every passengers worst nightmare on a long flight. I think a quiet zone would be nice but I sit in the quiet zone all sorts of places only to listen to ludicrous cellphone conversations so I am not sure that inconsiderate un self aware types will really understand that quiet zones don’t mean only they talk when they feel like it
i don’t blame you for being unhappy but it is the luck of the draw. If there was an unruly adult and the airline did not intercede you would have a bigger complaint. Me I would be mad but then move on to what I can control pretty quickly