News Tuxedo's Sirius 16 Gen2 is an All-AMD Linux gaming laptop with a 165 Hz IPS panel — starts at 1699 Euros

This is overpriced just to have Linux out of the box with AMD hardware. It would be much cheaper or more power for the same price to just buy an all AMD laptop with Windows and put that same Linux distro on it.
 
This is overpriced just to have Linux out of the box with AMD hardware. It would be much cheaper or more power for the same price to just buy an all AMD laptop with Windows and put that same Linux distro on it.
Please go and find one - it's not so easy to find. Also, stuff like fingerprint readers and infrared webcams (used by Windows Hello) don't often have working drivers. Finally, many hardware makers don't care about UEFI and HDMI compliance, making them hot/unstable on Linux. And don't try asking for official support : in most cases, you'll get "Y U NO USE WinDOZE?" as an answer.
Asus doesn't support Linux - period. HP supports Linux on some high-end models, and they're mostly Intel-based. Dell is pretty much gone. Lenovo is off again, on again - some laptops have actual supports, the next in line doesn't. They do have full-AMD no-OS laptops, but they often have no discrete GPU.
That leaves the Sirius or some Framework setups for a full-AMD Linux gaming fix - both are quite expensive.