I mean, the joke is that for the SAO VR worlds it kinda does, because of simplified mechanics or something, only your mental endurance is what can tire you out, and as we know that's the one thing Kirito truly has in spades, for all the Haters misrepresent how SAO goes he just gets traumatized and/or loses/hurts people he cares about every single arc XD
But yeah, even if that logic applied, Inoda should be a million times worse in VR, and even IRL tbh, he's legit a fatso in terrible shape that has spent at least several years eating instant food from what we know, he could have a horse-sized cock but he still shouldn't be able to last half a round of sex without dying for breath lmao. Luckily we can chalk it all up to Administrator doing some bullshit or another, thanks Fujino for the convenient excuse for the plot-holes