May be a mean sounding question, but I’m genuinely wondering why people would choose Arch/Endevour/whatever (NOT on steam hardware) over another all-in-one distro related to Fedora or Ubuntu. Is it shown that there are significant performance benefits to installing daemons and utilities à la carte? Is there something else I’m missing? Is it because arch users are enthusiasts that enjoy trying to optimize their system?
No, not really.
This is IMHO the most important aspect. The thing they’re trying to optimize isn’t performance, though, it’s more “usability”, i.e. making the system work for you. When you get down to it and understand all the components of the OS, and all the moving parts within, you can set it up however you prefer and then combine them in novel ways to solve your tasks more quickly.