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Well what's arguably even more horrifying is according to "Estimated average energy efficiency of bitcoin mining hardware" no significant changed happened since 2014. I imagine we went from CPU to GPU to ASIC in couple of years and now for more than a decade, no change, just more.

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Well, improved energy efficiency just means more hashes/s and the difficulty adjusting. There's nothing to be gained in terms of the security or efficiency of the network as a whole by making the hardware faster, it's only good for whoever makes and uses that hardware.

I'm not sure what data you looking at but we went from 8300 J/TH in 2014 to 33.4 J/TH in 2023. So... what are you talking about?

They have a graph at the bottom with the name I provided "Estimated average energy efficiency of bitcoin mining hardware"

You're reading the graph wrong, but I still have no idea how you are. Joules per terahash has declined from 8297 in 2014 to 33 in 2023 (the latest year they have data), a 99.996% reduction, or a 250x improvement in efficiency.

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