These people should have known it from Syrian conflict as they were part of it and there is alot of recent info about glide bombs.I suspect that one of the most important reasons why Hassan Nasrallah is dead, besides Israel's superior intelligence, is the vastly improved destructive power of contemporary bunker-busters, compared to early 2000s (image below).
glide bomb at long distance is not a minor technology to make it accurate. They are released from 16km height and fly at speed of subsonic cruise missile. many could be released simultaneously or sequentially on target.
1500kg bomb patent from 2007 and operational use in Syria decade later.
The invention relates to aviation ammunition and can be used to deliver a penetrating-type combat load to the ground with high accuracy to hit especially protected typical targets located in rock shelters, caves, and mines.
Opposition groups built the "central cave hospital" north of Hama to withstand bombardment, tunneling into a mountain in northwestern Syria for more than a year to bury it below 17 meters of rock.