UPFs get a bad rep because most of them are bad for health. Fair enough, if they’re ultra-processed to be cheap (and not nutritious). But not all UPFs are bad - ie those ultra-processed to be nutritious (and not cheap).
The term UPF seems a blunt tool. The British Nutrition Foundation did a report on misunderstanding of it. Confusion about ultra-processed foods - British Nutrition Foundation
eg ‘while many ultra-processed foods are not healthy options, this isn’t always the case.’