The only circumstances that immediately come to mind that would make me consider aborting a takeoff after I had passed V1 would be a restriction in the flight controls or my only then becoming aware of a CofG so grossly out that I was having difficulty controlling the aircraft and therefore, that I considered might not be controllable after liftoff.
Wiley, I guess pulling on the stick at V1 and all that happens is a tailstrike, but no lift-off, seems to me could be interpreted as a problem controlling the aircraft! Therefore a decision to abort would not have been wrong, according to your own argument. Who guarantees you that the bird will fly even with hitting TOGA? There might be another reason for no lift-off than simply inadequate thrust.
I am not pretending to know which decision is the correct one, but both seem equally reasonable.