And it is a classic for folks with limited mobility:
https://www.nytimes.com/wirecutter/blog/birding-window-get-s...
There's a reason why it has a reputation as a great retiree hobby - it's "go sit on a bench and pay attention" not "first, purchase a mountain bike of adequate spec...".
The person in that article saw ten species in two months? This doesn't sound like a situation where your activity is listed as "birdwatching", it sounds like you spend a minute on it every once in a while.
And if I consider binoculars and a feeder, that's on the same price tier as VR.
Some parts of birdwatching could be Virtual - watching a feeder somewhere (anywhere) waiting for birds to come in and watch what they do - or watching different trees/plants at different points in the year attracting different birds exhibiting different behaviours (eg. I have a love of seeing Tui[NZ] when Taiwanese Cherry or Kowhai are in flower, they gather in the tree at different times of the day when the nectar is at its peak, there are fights for dominance between the birds, there's a racket as they all feast, then boom, as quickly as they arrive they're gone again, off to the next tree)
So VR birdwatching works, or no?
Remember, if VR birdwatching works, then you can now watch small, fast-moving animals that exhibit specific combinations of behaviors at any time of the year from the comfort of your couch and thus, the benefits of birdwatching can be enjoyed by a much larger population.