You don’t need to re-clear a building you’ve blasted into rubble.
What?
former fucking soldier I am
No offense, but either you were a POG or you were peacetime. You're just wrong. This isn't even debatable remotely. This is like, literally, actually basic training shit, not even AIT. ATP 3-06, specifically 3-06.11 specifically states the immense trouble rubble creates for attacking troops, including obscuring enemy movements from ISR, providing cover and concealment for ambushers, blocking routes of escape and secondary roads, and providing excellent places for traps or explosives. It specifically states that rubble fields should be meticulously cleared to prevent ambushes and emphasizes a coordinated, combined arms approach including absolutely leveling anything suspicious with indirect fire or air support. ADP 3-90 specifically emphasizes that defenders should maximize use of rubble to control movements of enemy forces and lay traps and ambushes to disrupt their tempo and control the pace of combat, and recommends maximizing the difficulty of enemy AFVs to assist their dismounts by creating no go zones for AFVs which can only be cleared by infantry, and recommends engaging the enemy infantry from positions which are obfuscated from counter fire from the enemy's supporting vehicles.
Without getting too much into it, I have "relevant experience," and rubble in urban combat has always been a problem with no easy solutions. Even modern techniques like GPR are limited because you have to physically send either a vehicle or an operator out there with the equipment to use it, and as a rule, countermeasures are always more expensive than measures. What's the countermeasure to a 60 year old 152mm Soviet artillery shell wired to a $5 Chinese burner cell phone? A trained soldier with a $10,000 AN/PSS-14 with his ass hanging out.
Again, this is not to downplay any atrocities committed by the IDF, this is just to emphasize the difficulty which not just the IDF, but any force faced when dealing with combat in an urban environment. ATP 3-06 and ADP 3-90 are written in blood. They are lessons learned over the course of a decade of medium and low intensity counter insurgency in urban areas.