Yeah, but you probably wouldn't buy a computer under $600 to begin with though, either, right?
You need at least 8gb of ram, and more than an 128gb of storage (i.e. eMMC and SDcards).
I very much doubt any sub $250 computer could really handle your basic day-to-day tasks (or anyone else' on HN).
ARM-based Chromebook's have already proven that Pi 4-comparable SoCs can do most basic computing needs for consumers.
The idea that essential computing needs can be met with a $100 Pi 400 and a $50 Screen is just kinda crazy.