This thread is goddamned train wreck. If you need to fly with young children, buy a big bag of those el cheapo foam ear plugs and pass them out to whomever wants some.
I don't have kids, and I have sensory issues that make baby crying noises physically painful, but I get it. Sometimes you need to take your tiny human places, and I just have to deal. It's a part of life.
It's unreasonable to expect parents to buy you earplugs. If you know you have sensory issues, you need to pack earplugs just in case. That is your responsibility.