

I had an argument with my partner that they got to sit in bed on their phone for 10 minutes while I had to get up and care for the newborn. They were paying bills. I was still jealous. The argument ended with us both agreeing we were tired and would send the kid to daycare and nap.
As a breeder, yes babies learn that hunger is soothed by consumption. They have an innate sense to suck to sooth and most can suck and swallow. If they are uncomfortable from hunger (or anything else) they suck and if there’s something to swallow they do. Quickly they learn that if they continue swallowing when not hungry it is also uncomfortable, so many learn to either not suck in the same way which might release milk from a breast or they enjoy a pacifier or thumb instead.