First, that article is paywalled and the subheading just says that US intelligence confirms a suspicion. US intelligence also said Iraq had WMDs so they aren’t that reliable.
The IDF entering the hospital is a different thing from the complete distruction of the hospital and all of the other hospitals they have destroyed in Gaza. Or all of the other infrastructure they have destroyed, always claiming it was used by Hamas.
The IDF has also lied multiple times about not killing the journalists they have killed. Or the aid convoys they attacked directly despite the IDF knowing they would be trainsporting aid.
They are lying liars and claiming anything is ‘used by Hamas’ should be immediately suspect.
The article is from January and is speculation. I can’t find an article that says they did find a command bunker and network of tunnels, just a couple about finding a few weapons and communication items plus one unexplored tunnel.
Do you know of a more recent article that confirms there was a command bunker and network of tunnels? It has been 7 months and they spent the time destroying the rest of the hospital so surely there is something confirming that it was a Hamas command bunker and not just stuff left by soldiers who went to a hospital for medical care.