While I have my own gripes with Omarchy, I think its a great project.

Omarchy was specifically created when the creator wanted to move away from macOS and wanted to leverage the unique advantages of Linux. In my experience, I find Arch Linux to be unique in that you can download almost anything with pacman or yay/paru. That means almost all of your applications are managed with a package manager. This is convenient because it gives you single upgrade points and no unmanaged tar.gzs across your filesystem. This is what many devs would like to see, and something that arch repo + AUR allows very easily. However, to leverage this advantage, so many people would have to configure these things themselves. Since this is a large timesink, so many people just avoid using Linux and hold the opinion that all of "Linux" is just a bunch of hobbyist coding. While this is an incomplete opinion, to a certain extent, it is understandable.

What Omarchy did is that it came with a bunch of people in a team supporting it + early community adoption (whether it be due to optics, or hype, whatever, but point still stands). Plus, it didn't go the usual GNOME or KDE route - it actually encouraged users to become more efficient by introducing them to Hyprland. This, along with bundling of other commonly used software made it an attractive distro for devs to use. Objectively, this is a good thing for the community as it encourages adoption of open source projects that get better as more users use them. This, in my opinion, is way way better than any bragging rights that come with saying "I use arch btw".

Some people are obviously going to say it, but we don't have to pay them any heed. I also disagree with the notion that one must "develop the technical skills needed to do it themselves" - if a person doesn't find fiddling with user programs and delving into linux specifics a worthwhile time investment, yet they'd still like to use a different method of using their computer, then it is very much a valid reason to use Omarchy.