True - using nukes should be a last resort (Masada Plan?).
But isn’t Mecca a ramshackle city located in a mountainous bowl? Seems like conventional bomb energy would be focused. Would it take more than a few J-DAMs to reduce the Grand Mosque and Kaaba to a smoking crater? We have the AAR data from the initial bombing of Baghdad, surely somebody’s done the math about obliterating Mecca.
And when we do, will muzzies hate us any more than they already do? OTOH, the destruction of Mecca might just initiate chaos throughout the Muzzie world (”how could Allah allow this to happen!!?”).
Frankly, I don’t see a downside to destroying Mecca.
It would expose the lie of Islam for all the illiterates to see.