2013 MacBook Air daily driver here. MagSafe? Usb A? Sd card reader? User replaceable battery? Runs Linux? All checks. It’s light on RAM (which for just chrome and light app use honestly it’s fine).
yeah 1440x900 does kinda stink, but the screen is so small it doesn't really bother me too much. plasma does a good job shrinking itself down enough and virtual desktops help. 99% its a full screen chromium window so who cares.
I would guess that MacBook Airs, especially the current ones, are sufficient for the needs of 80%, maybe even 90%, of the entire laptop market, who I presume just need to be able to use a browser and spreadsheets.
And they last for years and years, and I doubt the cost:performance:longevity ratios can be beat.