>>39594124Far more Pokemon benefited from the Physical/Special split than were nerfed by it. And those nerfed were also indirectly nerfed by other factors in Gen 4, including the minor power creep present for example.
That said, I think the Physical/Special split is a bit overstated in its degree of being ground changing. Not because it isn't an objective improvement over the old system, but because it's easy as fuck to implement and Gamefreak didn't add it in the earlier games because ???
Seriously anyone with even basic understanding of code could easily add the Physical/Special split to a Gen 1 or 2 game it's shockingly easy.