Even if you don't really care about portability all that much, why would you buy a more expensive and less capable machine? For example:
The Asus ROG Strix G713QY is a 17" machine with a 90Wh battery running a 5900xh and a 140W RX 6800M (goes up to 160W if you select Manual Mode from armoury crate and drag the slider all the way to the right) - typical gaming laptop - yet it gets up to 11h of battery life.
Don't want an AMD video card? There's the Strix G713QR with a 130W RTX 3070 (goes up to 150W if you select turbo mode from armoury crate). Both have great battery life for 17" gaming laptops. They are both matt black apart from the red plastic bit in the corner witch is is user replaceable, and you get a transparent black and a silver one besides the red one with your laptop (G713QY only, the G713QR comes with a black part only). As for the RGB, you can disable it from armoury crate. The G713QY has a magnesium lid and palmrest. The QR has a plastic palmrest and magnesium lid.