Sure, I respect your opinion. If I found a FV43U at the time and been gaming at 4K all this time, I would share much of your sentiments. It doesn't diminish the way many others run their cards, though, just because that's not how you play. Have you run a higher power GPU on air in something sub-20L? You feel every watt of power draw. Given the popularity of NCASE/NR200P I hope I don't have to debunk the myth that SFF is "niche" and not the way one "should" play.
I'm not calling this efficiency thing a bug or a problem, and I don't believe it is. But this whole "maybe that's because you're not playing like you SHOULD" is pretty stupid, counterproductive, and even obstructive to drawing attention to getting real bugs fixed (high refresh multi monitor power, which thankfully is finally getting on the right track). And even kinda hypocritical?? I thought Nvidia elitism was what got us in this pit in the first place ("omg real gamers care about RTX").