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On mobile, so too lazy to see if it was mentioned, but this just supports my ideas of forced evolution.
The DNA theme has to do with Flare forcing evolutions onto Pokémon who would never evolve otherwise, giving them all a darker and corrupted look. The boss could use Grunt 'mons with MegaEvolutions to showcase it. Had the idea of forced evos from Day 1 and I hope it's true.