I feel like I’m the right audience for this - a not very good climber with unusual distribution of limbs.
But I’m not interested - part of the fun in climbing is on sight climbs and solving problems yourself.
Figuring a route for the first time is by far the most rewarding part of climbing (although I love all of it). Same with kids - if they grok something on their own, what a reaction and reward compared to being told how to do it.
If you never feel like you need help from watching someone else climb, then I think you are not trying hard enough problems.
I believe this is consistent with most elite (or elite-aspiring) athletes from many sports.
While I personally enjoy the problem-solving aspect of climbing (when I rarely do get out), I absolutely see the value in this project (and other climbing apps that thrive on beta sharing)
Edit: Unsurprised to see the demo on a gym route instead of actual rock.