Did Bane really collapse the Lehon temple?

Retarded is the word you're looking for.

But this is Drew Karpshyn we're talking about. The guy whose greatest claim to fame is wanking a Gary Stu's achievements and yet still managed to give him less of a personality than a rock.

Then to cement his short comings as a manwriter he decides to write a novel so full of steroids and testosterone that WWE nearly gave the Novel a million dollar contract.

So again. No surprise that it's "bizzare"

Guess it took all his energies to defend against the wave.

Also just to clarify, the text states the temple was 20 meters.

Only on the higher ground. A portion of the temple was underneath the ground.

Yes.