As the device - with Manjaro - is a new possibility - I don’t think anyone besides a few devs has done specifically that.
Look closer at the specs and use your favorite search engine
Partly because it is made from cheap materials … partly because GPU is integrated with CPU … partly because hard competition makes selling hardware a next to non-profit business.
I know because I have been there. A couple of years ago I ventured to serve the community with some low-spec laptops - when all costs were covered - there was €20 to split between Manjaro project and myself.
But I guess Beelink can do better due to quantity - but still … not a lucrative business that deserves any envy.