I'm so confused by the tomato sauce debate herem..surely a tin of chopped tomatoes, reduced a bit (for however long you have) and some garlic and/or herbs is a better sauce than dolmio at a fraction of the cost? Sure, it's nice to make a fancy version with fresh lovely tomatoes and slow roast them but that's a different thing.
I have a toddler and both us parents work full time. I'm completely British and disorganised but we somehow manage not to eat much processed food. If we haven't managed to cook a proper meal then things like omelettes, crudite type vegetables, toast, bagged rocket, stir fries etc are on the menu. Or grab a freezer meal which would be something we froze when we had leftovers. I always have soup in the freezer so soup and a sandwich is fine.
We are not upf free but for example today there was nothing in for my lunch and I'm working from home, so I made noodles, eggs and frozen peas, mixed in some chilli sauce (probably UPF but mainly fermented black beans, chilli and oil, plus it was only a teaspoon). Not the height of culinary achievement or a particularly healthy, but it was nice, filling, cheap, and I managed to get a vegetable in there! It took maybe 7 minutes max to cook.
As for the diet of other toddlers ...I just find it sad. I will literally just take a hunk of cheese and an apple out with us if I haven't got anything good in for him to snack on and he's happy with that, yet everyone I know brings expensive, processed crap from the "baby food" section because they don't have time. I think in this case it's a confidence thing - marketing tells you this is a proper healthy food for your child, whereas you look at what I pack and think that's a bit rubbish 🤣 but it's all real food so I'm happier with that.