Why not buy an 85” tv? They are dirt cheap and you can place them far. For webcam, I have used my dslr in the past but any webcam works as now Google meet autozooms in on the face
> reflected image from a projector screen is gentler on the eyes than a projected one from a computer monitor
If true, that is a very strong reason. However, it strikes me as a [citation needed] or questionable extrapolation from indirect/diffuse room lighting or bias lighting.
Citation most definitely needed. Perhaps the rationale is that the image is blurrier, or the contrast is worse, but both of those could easily be simulated by a monitor if you valued them.
Indirect reflected light like you get from a piece of paper, or an e-reader, or almost any everyday object, yes, I can see how that is easier on the eyes.
But in the case of a projector, the screen is lit by extra light; I'm not sure the situation is all that different from a regular monitor.
That works too. It depends on what you value. If you want more screen real estate while keeping a long distance between your eyes and the screen, then go for the projector.