Plans to Modernize Notre-Dame’s Stained-Glass Windows Move Ahead Despite Heritage Experts' Rejection

Honestly, I'm for it, especially once I read the part about them having been modernized once before. Notre Dame is neither a museum or a ruin (or at least, not a 'natural'/pre-existing ruin, for lack of a better term); it's a working church in continuous use and should be treated as such.

Don't get me wrong, I'm all for them also recreating the 19^th century ones (and the 12^th century ones too, if they have good references for them), but then displaying them elsewhere as a museum exhibit. (It could be in the context of an exhibit about stained glass art, or one about the history of the cathedral, or even one about the fire and reconstruction specifically.)

Couldn't they just replicate the original design?