I don't doubt it's physically possible. I doubt Apple implemented it. So I rather wait till there is some hard data. Apple could also have implemented proper cooling for their Intel laptops but they didn't.
He also reported that the loudest fan noise he could get was 38dB, with typical loads under 30dB. [2]
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But also, I'm not aware of anyone that implemented "proper cooling" sufficient to handle the last few generations of Intel chips (at least at the high end.) I read reviews of a variety of machines. All of them had issues with throttling.
I was so happy when the Ryzen 4000 mobile chips were reviewed and did not require elaborate cooling systems just to perform their regular duties. I would be shocked if the 2021 Macbook Pro 14/16" have issues with thermal throttling.