I may be missing some nuance and/or perspective here, but is this truly an issue? I've used Dell, HP, Lenovo/Thinkpad, and most recently Framework laptops over the last 15 years, and only one of them offered an out-of-the-box Linux experience. _All_ of them ran Linux (ArchLinux and Fedora) fine if I installed it myself.

Is the concern surrounding having to install Linux yourself (valid concern), or around vendor support (subtle BIOS issues, lack of trackpad support, etc)?

Edit: Emphasizing my "fine" experience with Linux.