CATHEDRAL ANONS HAVE IT RIGHT
Check this documentary. https://www.pbs.org/wgbh/nova/video/building-the-great-cathedrals/
Only the lead roof and it'd wooden supports were lost for the most part. They kept the interior dry……that's about it. The rest of the structure was/is sound.
Notre Dame did have some flaws (see the documentary) but they were being addressed.