That this was done on the Yom Kippur anniversary underlines how long this has been planned. One cannot invest that much in a planning cycle, and still have delusions as to the reaction to a plan. Or at least, it's hard to envision such an operation being so miscalculated that they didn't foresee devastation of their own area...and they wouldn't have built such an intricate tunnel system for defense/offensive headquarters.
The tunnels are reminiscent of Vietnam. I hope the tactical expertise of tunnel ratting has not been lost.