listen to these parents, they are describing their children, whom they know, and how they react, at their ages, in these sitautions, and what they have found works best for their family. These are learning to love going to church on Sunday and when they are school age and ready to begin preparing for sacraments can be prepared to transition to what our grandson calls big boy church. He was very proud when he started Catholic school and his poor little sister had to stay in the pre-school room. But he also came with a good knowledge of the Mass, what goes on, what to do in say, that is easier for the preschool catechist to transmit in an organized classroom, than for a parent in between shushing, trips to the bathroom, and cheerios. OP has chosen another very good way, and both these parents are wiser IMO than my parents who did impose rigid discipline at an early age in church but in the same harsh drill sergeant way they did in other situations. As I say repeatedly, find out what works with your kids, at their age now, with your family dynamics now, and don’t feel constrained to compare your kids to others, or to conform to some rule about it. \
As to eating there is a huge difference between feeding an infant or toddler when their need to eat coincides with Mass, and using snacks for older children as bribes, especially if they have eaten breakfast before you leave. My only request is to please have some consideration for those who clean up after you, as most churches are like Southwest Airline, they don’t clean the seats after every flight.