I think people assume it must all be "junk food" but if you have a sandwich and a packet of crisps for lunch (as many people do) and muesli or granola for breakfast its quite likely already 50% of your calories might come from UPFs as that's entirely UPFs.
I don't understand this remark. This is the muesli I buy for my household (Mornflake Classic Fruit & Nut Muesli). OK, it contains a minuscule amount of preservative, but the rest is minimally processed. My husband adds lot of jumbo rolled oats to it and then also adds some extra nuts, seeds and various different dried fruits to slightly adjust the flavours and textures.
Mixed Dried Fruits, Nuts & Seeds (38%) (Dried Dates (10%), Raisins (8%), Sultanas, Coconut (4%), Sunflower Seeds, Dried Apricot (2%) (contains Preservative Sulphur Dioxide), Almonds (1%), Hazelnuts), Oatflakes, Toasted Wheatflakes, Barley Flakes
This is the granola he has sometimes instead (Mornflake Classic Granola Raisin & Almond):
Oatflakes (65%), Sugar, Raisins (13%), Rapeseed Oil, Almonds (2.5%), Honey, Sunflower Seeds, Natural Flavouring
I suppose here again there is a minuscule amount of natural flavouring, which could be anything. If it was vanilla essence, which I always have in my kitchen, they would say so. However, on the whole that seems fine to me.