I’m not familiar with OpenSUSE or Manjaro, but if you are familiar with Ubuntu, then I would recommend either Linux Mint or Pop OS. Both are Ubuntu-based, and Pop OS has a Desktop Environment that is very similar to macOS. Pop OS is also suited for gaming with Steam, but then again, I think Steam works well on any Linux distro. The team behind Pop OS is currently doing some major revamps to the OS, but these changes are not yet released for stable use.
If you are building a new machine, I highly recommend you check to see if your HW will be compatible with Linux. You might want to pay close attention to the GPU and Wifi card. NVIDIA requires special drivers to work with Linux, while AMD works out of the box. As for the Wifi cards, depending on the wifi drivers that are installed in the distro, you may have to tinker a bit to get that to work. I recommend having the option to use Ethernet at the time you are setting up the distro, just so you have internet access to download what you need.
From my (small) friends circle, I haven’t heard any of them talk about getting one. However, it’s worth noting that these friends of mine are also not the ones who would buy new smartphones every year. They typically hold onto their phones for a few years and only switch when it seems like the phone isn’t performing as expected (e.g. battery draining too quickly; slowness in software actions; to name a few).
One question I do have is, what happens if you clean install an AOSP like GrapheneOS onto these newer Pixels phones? Does that remove the AI features completely?