I feel like there is something wrong with me because I just don't care how many more blades of grass one camera can capture over another. Probably because as a component of an image, resolution generaly makes sweet fa difference wether the picture is any good or not and it doesn't earn me any more throwing more money at something that gets laughably called an upgrade.
Only people that spend stupid amounts on gear will ever bother to look for the difference and call it good or bad.
People will see what they want to see, whatever you see some smart arse will take you you are not looking at it properly.
If I were shooting just for pleasure I think even 40mp would be fine, but others may consider the use of an 80mp back on a tech cam pleasure and a 40mp speed shooter as work. There's nothing wrong with you not seeing value in high resolution sensors, but that doesn't mean that they don't have value for those that need them for technical reasons, like being able to print images meters wide without stitching, having to stitch less or cropping heavily.
You should also never judge pixel count, at 51mp the 645Z is of middle-of-the-road in medium format resolution, but has superior ISO and DR to just about every stills camera as of today, even the 12mp A7S, despite having 2.5x the pixel density. It's not like you
have to use all those pixels, as over-sampling has it's various advantages too, like compensating for the fact that color sensors still only capture 1/2 their resolution in green and 1/4 in blue and red, and also reducing the possibility of moire and other artifacts. Even at the same sensor size, a 50mp image sampled down to 22mp will be better every time than a native 22mp capture, assuming normalized performance isn't hampered, which judging by these early results shows that it hasn't - at least compared to other Canon cameras.
That cameras are sporting resolutions 2-3x the amount they would normally have 5-8 years ago while performing as good or better is a clear indicator that you just shouldn't look too much into paper specs, which with recent technological advancements is becoming less and less of an indicator of how the sensor really performs.
