I think the original article made a good point, and one that seems to be overlooked by pretty much every critical response: if you don't already know standard sysadmin tooling and procedures, then the value proposition for k8s for small projects alone is probably comparable to standard sysadmin tooling. At least with k8s, you can take that knowledge with you when you want to scale.
I don't know if I'm totally convinced by that argument alone, but it would be nice if every critical response didn't seem to assume that every hobbyist is born understanding systemd, ansible, packer, qemu, etc.