I have used manjaro on my personal laptop for the past 4+ years and I share the same sentiment. Great for a computer but I'm not sure what value is added on the pine phone.
What all of these distros basically do is some non-trivial amount of integration of existing software, and configuring/patching it for PinePhone, presumably.
Not sure about manjaro specifically, but it looks like it will be another phosh based distro. Their forum will probably have more info eventually:
