In my case it's about prepping when I have the time,
I don't use her methods as I have my own system but The Batch Lady (she's active on all social media and has her own website) has lots of ideas for home cooked food prepared in advance that isn't just slow cooker type stuff.
but with your wedges example I'd probably be washing them, chopping them and par boiling them the day before at the same time as putting together that evenings meal. They would then be in the fridge ready to go straight in the airfryer for tea the night after.
a typical week for me is e.g a roast on a Sunday, but I'd cook up the mince etc for a lasagne or a cottage pie at the same time and assemble it all and it would go in the fridge ready to go straight in the oven on Monday night when I get back from work.
Tuesday would be chop an onion and make risotto with the stock and leftovers of the roast from Sunday (sometimes it's a rice stir fry with a bag of stir fry veg).
Wednesday we have after school activities so I microwave baked potatoes (sometimes in the morning during breakfast/ while I'm in the shower and then into the fridge!) and they crisp up nicely with a bit of olive oil in the airfryer. Alternatively it's omelettes or homemade soup (again often made in batches at a weekend and frozen).
Thursday is quite often fish baked in the oven in butter with boiled new potatoes and veg
friday is pizza or chips egg and sausages and beans which absolutely is processed unless I can be arsed to make it myself!
Saturday I'll make a batch of soup at some point and freeze some, and sat night we tend to have a nice meat/dauphinoise potatoes and roast veg type meal.
two primary school age children, two (more than) full time working parents in demanding jobs and no external help.
We have no choice but to cook from scratch most of the time due to some of the family being coeliac, and it is doable, but if I could use processed food more often I can absolutely see it would be tempting to do so!