I did a pure Arch setup in a VM before I made the ultimate switch to CachyOS. I did not use the installer script but followed the guide on the wiki to get the basics running, and then I customized from there.
And while I'm glad I got that experience, because it taught me how much is really going on under the hood, I discovered that I simply don't enjoy that level of tinkering. It's not laziness, it's a lack of enjoyment towards the process.