> No laptop released by Microsoft or most of its OEMs officially supports Linux.
I disagree that "Most OEMs don't officially support Linux". Lenovo supports Linux on 17 laptops released in 2022 alone [1]. Dell also has a similar effort, with Linux supported on the 2022 XPS 13 Plus [2] among others. HP has its DevOne[3]
But at the moment, I don't know of an modern, high performance ARM laptop with official Linux support.
The closest thing I know of is the Nvidia Jetson AGX Orin Dev kit by NVIDIA[4].