Disagree. Existing aircraft can already perform flight maneuvers that overwhelm a human pilot before the airframe reaches any sort of engineering limitation.
In the real world? With a munitions loadout? Without needing an immediate overhaul? I don't think so.
Limit loads are the design point, which are 1.5x lower than the ultimate loads, which are still lower on actual aircraft than what humans can handle (and are not meant for sustained or repeated operation).
