You mentioned a ton of things that change (which, sure, they do, after all it would be weird if, after processing when things taste differently, nothing would have changed), you did not make the causal link to things changing in a way that is detrimental to health.

Just because it changes doesn’t mean it‘s bad.

Even your only point where one could argue that there is a potential obvious negative health effect (the vitamins) is only an issue if there are actual vitamin deficiencies that matter.