[et-al]

I only watched the video, but without taking in account the texture of the holds, the grading aspect would be limited.

One also learns to just recalibrate according to regions. E.g. climbing 11d at one gym, versus 12a at another.

[mordechai9000]

Also, how will the AI know when it is appropriate to inflate the grade to make the climbing seem harder, and when it is appropriate to sandbag so I can pretend a route is easier for me than it actually is?

[takk309]

Easy, it'll just grade everything 5.9+!