Pasteurization saves lives. Flash-frozen foods retain more nutrition in transit, while freezing seafood kills parasites. And even the best bread and butter are as processed as food can get.
I'm reading the "chemical additives" list and it's a mix of obviously harmful things with known safe things added in trace concentrations - there's no intellectual rigor and a lot of fearmomgering.
- little Debbie snack cakes
- cereals
- white breads
- hot dogs
- chips
- pizza rolls
- Velveeta
- pop tarts
So I guess you're right, it has no meaning. But you're way off, I don't think anyone is talking about frozen raw fish as "ultra processed", or pasteurized milk.
You can make bread with salt, flour, yeast, and water. Most breads in the grocery store, however, have considerably more ingredients, which are more in the purpose of treating the foodstuff as an industrial product rather than for nutritional purposes.
(That's not automatically bad btw. The amount of ultraprocessed food you can eat is actually probably quite a lot in relative terms before it starts causing health problems --- the problem is when it becomes 70-80% of your diet.)