I can confirm: I opened a Binder Collection and an Elite Trainer Box from two different sources and opened a Holo Basic Grass Energy in both; one of them with the gorgeous classic pixelated Holo, the other with the flat modern imitation.
I doubt they intended to create two different versions from a collecting point of view, but the Holo sheets are different enough that I can’t imagine mixing them up accidentally. Maybe just trying to get rid of excess of one of them?
Regardless, the classic version of the Holo pattern is so vastly superior; swirls and stars and sparkles and my god those gorgeously defined pixelated orbs! Begone, modern smooth flat circles!