I gotta say, apart from the broken stuff when venturing off the garden path with Armbian install/config scripts, I'm very impressed with the distro after installing it and spending a couple weeks pushing the NanoPi M4 to its limit.
it doesn't support LXQt as a desktop out of the box - meaning installing #LXQt isn't a curated option in the #Armbian install script - but just adding it as one would typically do on a bare Debian machine works fine, there are few to no obvious bugs, and the desktop is very snappy on the #Rockchip RK3399.
I will try to get a #NanoPi M6 eventually, as 4 GiB RAM is just not enough, but for now the M4 is doing very well in the role I have it in.