Come on now, even the author is pretty clear they're making compromises. Whether that's slower internet speed, lower quality display, worse battery or inability to run modern apps/web apps. There are a lot of ways in which this is making a trade off to priortize cost vs productivity. Sure, you can say all the ways in which the old laptop is inferior are unimportant, but I would atleast like to see some serious consideration of it.
I have my doubts you'd take any such arguments seriously, if you are set on the idea that productivity universally requires a 14-hour battery and a 2.5k screen.
I was traveling recently and got a lot done on an 8-year old tablet. I was very productive, I suspect the combination of being offline (no 5G modem), no random notifications, just me, the terminal and a Bluetooth keyboard. The compact size & weight, and not having to worry about losing or having an expensive iLaptop stolen made for a worthwhile trade-off. Any productivity gains would have been marginal at best, and not worth the cost.
