The idea of enabling proprietary software in the default install is apparently verboten to some, and getting that viewpoint out there helps people understand why Linux on the desktop is where it is.
There are plenty of strange things that gets publish every day, I don't see why you get hung up on this post.
Was helpful to me. I now know not waste my time.
the poster seems to have skipped over the point that "Omarchy" is just the default configuration of Arch for 37signals internal use, and enthusiasm over it working well caught on, so it's shared as open source.
CachyOS is another set of UI configurations of Arch and is also just handy.
disclaimer: i use both and they work well.
It's a blog post, a medium where people can self-publish their writing for no other purpose than expressing themselves. These things have been around for decades at this point.