Having been through a Church fire, I agree that it may be possible to reach a higher degree of moral certainty. I’d rather hear it from a fire Marshal than a priest. The trick is getting particular knowledge and general expertise sufficiently together.
Just found an article quoting the Fire Chief stating that the main structure - including the two towers - was intact, the pipe organ survived, and most artwork and artifacts (including the crown of throrns) were saved. I tried posting the link but I can't post USA Today links to FR.
All good news, at least as good as can be expected given the circumstances.