You are wrong you’re confusing common opinions and biases towards rolling release distros with the actual reality and purpose of manjaro as a distro.
It is described as an easily installed user friendly distro where making hardware work well out of the box is one of the highest priorities. This is not working well out of the box e.g. runs counter to manjaro’s mission statement of:
We are on a mission to get the popular Manjaro Linux to the masses and get it working on your hardware straight out of the box.
Or from the wiki:
Manjaro is a user-friendly Linux distribution based on the independently developed Arch operating system. Within the Linux community, Arch itself is renowned for being an exceptionally fast, powerful, and lightweight distribution that provides access to the very latest cutting edge - and bleeding edge - software. However, Arch is also aimed at more experienced or technically-minded users. As such, it is generally considered to be beyond the reach of those who lack the technical expertise (or persistence) required to use it.
Developed in Austria, France, and Germany, Manjaro provides all the benefits of the Arch operating system combined with a focus on user-friendliness and accessibility. Manjaro follow Archlinux and officially only offers a 64 bit version. Manjaro is suitable for newcomers as well as experienced Linux users. For newcomers, a user-friendly installer is provided, and the system itself is designed to work fully ‘straight out of the box’ with features including:
Pre-installed desktop environments
Pre-installed Graphical Software Managers to easily install software and update your system, and
Pre-installed codecs to play multimedia files
Of course things sometimes slip through the cracks that’s inevitable, it happens on the other distros too (to be honest I had a harder time using ubuntu, mint and fedora than I ever had with manjaro, with issues no less serious than this).
As a former gentoo and arch user as you can see I don’t really have a problem fumbling my way towards solutions when problems like this crop up, but it runs counter to manjaro’s purpose for things to be this way, it’s supposed to work well out of the box and if manjaro really is this bad out of the box on AMD/Nvidia combo PCs then that is an enormous oversight by the devs that should be addressed with high priority.
We’re not talking about a niche hardware configuration here, this is a common setup, it should work better than this out of the box.