But on a daily basis, what am I teaching my children if I always make their lunch and clear up after myself? Mainly that lunch appears by magic and that there is nothing more to food prep than the actual end product
Only if they never have to make a meal themselves. But my teens always make their own lunch at a weekend, and often make a meal for the whole family. So they know perfectly well that lunch doesn't appear by magic.
We all pull together by each of us doing what needs doing for ourselves How, though, is this really practical? My kids are perfectly capable, for example, of washing their clothes, and will often put on a wash, or fold laundry etc. But if each person in our house only did their own laundry, it would result either in a lot of waste of energy and time (half empty loads, washing machine always on) , or clothes not being ready when needed because there wasn't enough of one persons clothes to make a full wash.
'Other people doing different things' so often means 'other people watching telly in a state of blithe indifference
Not necessarily true, usually when I'm making dinner, or packed lunches, or putting on washing, my kids are doing homework, or are at a club, or are out with their friends, being, you know, kids. Sometimes they are just watching telly.
But sometimes, when I'm working, or I'm watching telly, they are cutting the grass, or making a meal, or cleaning a window. Because everyone needs some downtime, and that's achievable because we help each other.