The point isn't that the MacBook Air isn't better by some metrics than PC laptops. A Rolls-Royce is "better" by certain metrics than a Toyota, too. What makes a device luxury is if it costs substantially more than competing products that the average person would consider a valid replacement.
https://www.amazon.com/HP-Pavilion-i7-11370H-Micro-Edge-Anti...
The point isn't that the MacBook Air isn't better by some metrics than PC laptops. A Rolls-Royce is "better" by certain metrics than a Toyota, too. What makes a device luxury is if it costs substantially more than competing products that the average person would consider a valid replacement.