would you guys be furious if the legendaries are shiny lock for these games too?
I wouldn't be bothered by it too much. From all the legendaries that can be shiny legitimately, the only one I don't have yet is Shiny Landorus.
But if I'm someone who don't have those shiny legendaries yet, then yes, I would hate them for putting the shiny lock when they can be shiny in the originals.