I find it very interesting that due to the existence of the Emoji Bar, and the lower performance and worse battery life due to Apple Silicon, the MacBook Air is now a far more Pro machine than the 15 inch MacBook Pro.
For one short year, in 2020, due to the ARM transition, Apple repeated that feat. It could keep on going, if for example, the refresh of the Macbook Air comes out in 2022 and beats the Pro machines that came out in 2021.
Form factor basically same, screen the same, OS the same, yet somehow the qualitative feel changes with the new responsiveness. I don't switch to any Mac other than the M1 now except of necessity because of the instant ability to feel the downgrade.