The specs are very specific to gaming, and anything similar (1440p@120hz) will include the cost of the hardware required for local gaming.
Can you get 120 hz this cheap in Windows laptop?
... for a discrete set of tasks, maybe. As a general purpose OS, not a prayer. I know Chrome is trying to become its own OS, and seems to be making pretty good headway, but don't cheat yourself thinking "and I'll just ..." unless that task runs in Chrome. I'm aware of the Linux containers on approved devices but just like WSL2 has some grave impedance mismatch with its Windows parent, so too does Linux with its ChromeOS parent
Which negates the entire point of the OS and you might as well just run a regular desktop Linux where you don’t have to jump through hoops to do things and don’t have Google crammed up your ass.