I think he thought about your head shacking around during a rough cross country ride.
It could be harder to focuss your view onto a screen without your head(neck) being supported.
When using eyepieces you can press your head against them for additional stability (and sometimes ram your forehead into it ).
I don't know if this really makes a difference and would not try to argue against it before I meet somebody who used both (screen and eyepiece).
It could be harder to focuss your view onto a screen without your head(neck) being supported.
When using eyepieces you can press your head against them for additional stability (and sometimes ram your forehead into it ).
I don't know if this really makes a difference and would not try to argue against it before I meet somebody who used both (screen and eyepiece).