Overclock has always been an extra! Of course if you overclock a GPU or CPU, it will consume more power! TDP is usually measured at default clocks on most brands. If you overclock, naturally the power consumption rises, but most people are fine with that, because they get extra performance. No one is forced to overclock the cards, we can simple run them at default clocks with the original TDP. But, if we have some headroom to gain for example 10% or 15%, i don't see that as a negative aspect.