The GPU performance is insane too, approaches M5 results at ~20W.

Of course it will be in Android phones so it will be throttle hard past 4W and will have terrible drivers.

I wish phones moved to HPB packaging and active cooling so we could have sustained 10W and use them as light workstations.

That exist, kinda. Android gaming handhelds have mobile SoC and also active cooling. See Ayn and Retroid devices. Their (almost) throttle free is a very nice experience.

Yeah I have an Ayn Thor with a Snapdragon 8 Gen 2, it's great being able to play fairly demanding Windows games on this tiny device.

It's still PoP with the RAM stacked on top in a plastic casing so you need a pretty big fan to cool it since you have to go through insulating plastic, then the RAM to get to the CPU.

With a HPB packaging you can cool the CPU directly and could theoretically get the same amount of cooling power with a much smaller fan that could be integrated into a thing smartphone (à la RedMagic).

Xiaomi smartphones were extremely well made at least a few years ago. Even the core software was impressive vs Google for example (try echo cancellation on any of your non-Xiaomi devices). Its only real problem is ads.

Yeah it wasn't a dig a Xiaomi specifically. All Android devices have broken Vulkan drivers. We have to rely on alternative open-source drivers (e.g. Turnip for Snapdragon) for real compatibility and performance.