I don't think it has anything to do with efficiency, but with effectivity. You could argue producing addictive videos for teens is Mr beasts goal. And he is very effective at doing that. And actually yes, successful at that goal.
Success doesn't really have a moral component, it's relative to the stated goal. You could argue it's not meaningful or moral or worthwhile or valuable, but you can't deny that he has achieved success.
So the thing you can take away from someone like mr beast is "what made them so effective?". A lot of his strategies could be useful for other, more worthwhile goals than his! So there's something that can be learned. I think that's what people mean, not that "people in tech generally value efficiency".
Success doesn't really have a moral component, it's relative to the stated goal. You could argue it's not meaningful or moral or worthwhile or valuable, but you can't deny that he has achieved success.
So the thing you can take away from someone like mr beast is "what made them so effective?". A lot of his strategies could be useful for other, more worthwhile goals than his! So there's something that can be learned. I think that's what people mean, not that "people in tech generally value efficiency".