Why would YouTube ever “focus on creators and their needs”? YouTube is an ads business run on top of user-generated content. YouTube’s customers are advertisers. Susan greatly “improved product-market fit” during her tenure, by forcing many changes upon creators which made advertisers happier and more willing to run ads on the platform.

YouTube only cares about creators insofar as advertisers care about the eyeballs being there to watch their ads (which, yes, they do); and the people with those eyeballs have a preference for high-quality content (which, uh… undetermined); and there is a seller’s market for content (which, no, there isn’t; the long tail of eyeball-attracting content on YouTube is created completely without compensation.)