Are you saying that the population that has access to virtual reality hardware is "much larger" than the population that has access to going outside?
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.