Comment by CydeWeys

The relevant French agency has weighed in. https://twitter.com/SecCivileFrance/status/11178596627941130... Translated into English, that says:

"The weight of the water and the intensity of the drop at low altitude could indeed weaken the structure of Notre-Dame and result in collateral damage to the buildings in the vicinity."

So, yeah, I'm gonna trust the experts on this one, not random armchair Internet quarterbacking.