I'm disappointed by how shallow even "in depth" reviews are that they don't mention this. A reclined position basically eliminates weight and balance issues. Additionally, using a traditional monitor in a reclined position is very difficult.
For Meta's Quest headsets, third party manufacturers sell solid "halo" head straps, which are much more comfortable by distributing the weight mostly on top of the head instead of just pressing the headset to the face. Basically imitations of Sony's PlayStation VR.
The top manufacturer is BoboVR, but they obviously haven't yet made one for the Vision Pro.
I don't get why Meta and Apple don't include this as the default, given that it's obviously the optimal solution. Then again, at least Apple even used a heavy and unnecessary metal frame in the headset, so ergonomics clearly isn't their top priority.
On the bright side, the AVP's "Lightning-like" connector for the arms means that it's at least theoretically possible for third parties to design whatever mounting hardware people want.