If you are a professional in a sphere like engineering, then getting eg 10k views on your videos is very remarkable and acts as a indirect proof of acclaim. But when it is the whole metric, then it just overvalues public professions where in itself 10k views is nothing remarkable. That's the core issue as far as I understand.

(But even for professionals, it's a very gameable metric. There is a whole industry that helps getting published material and appearances for O-1 applications.)