Also, I'm curious to see what the Manjaro installer looks like...
I've been using #ArchLinux for years, but I couldn't recommend it to any of my less technical friends. Even with archinstall, it's still not a smooth experience.
The #Manjaro live image booted quickly and effortlessly in UEFI mode, bringing me to a plain #KDE #Plasma desktop (which is good).
The kernel in the live image is 5.15.60 (an LTS kernel), and KDE is 5.24.6, which is quite outdated.
As expected, WiFi, GPU and sound work perfectly out of the box. If this isn't your usual experience, learn to pick your hardware more wisely, or stop using outdated distros.