Ah, neat. I checked and the site: syntax also works , but !yt is certainly less typing.
Ehh, maaaybe. Every website is invested in outside search, TBH, since it’s how they stay alive. The issue with video, specifically, is that many sites don’t have as much metadata to match against as YouTube does. A lot of video hosting platforms treat the accompanying text content as an afterthought – at best – and so their users end up doing the same.
As neural nets and machine learning algorithms mature, they’ll grow increasingly able to generate robust metadata from image and (eventually) video content… directly, without it having to be provided separately as text. But that kind of stuff’s still 5-20 years in the future, before it becomes commonplace anyway.