They’re purposely trying to sexualize something that’s not supposed to be sexualized….with an INFANT involved. It’s legit deviant behavior

Americans over sexualize everything. Where there isn't anything sexual, we find something sexual. There's a reason we don't get the national geographic magazines that had native women topless. Even if they were just farming, or sewing and happened to be topless "ooohhhh that's sex!!! That's disgusting! Children shouldn't see this!"
There's a difference between a woman's bare breast and a woman who's breast are bare that is being sexual.
If
you find something sexual about a child or infant putting a woman's breast in her mouth, then that's all in your head. If this woman is using a vibrator or moaning while a child puts her breast in its mouth then, yea...that's sexual.
This is my opinion, I don't find things sexual unless it's intended to be sexual. I've seen people change a baby's diaper in a park, laying on blanket, middle of broad day. This wasn't some tiny crowded part but a big green space where you'd go to sit in the grass and read, lay on a blanket, people do yoga, kids run and fly kites, etc. But yeah..parents changing a diaper in their own little space. I saw that and like you said about breast feeding, it's natural. I don't think they should've had to pack up all their shyt and go to their car and change the baby in private, or take a walk approximately the same distance to go to a provided restroom area. It was nothing, no one had their phone out, they weren't making a scene. But I've see the exact same scenario where a person was confronting a parent about changing their kid outside because whoever was doing the confronting obviously had their own twisted fantasy about what was going on.