Sundar was at the helm when the decision to worsen search results for the sake of ad revenue was made.

Previously, the two concerns were "firewalled" so as to prevent the money-generating side of the company from eroding the user experience.

This is a theme that's been at the core of every Titan of Industry's decline. That is: chasing of short-term results with disregard for the long term consequences. Alphabet is just so big and dominate in search that it will likely take quite a long time for the negative effects to appear. And they have other large businesses that haven't been as aggressively enshitified (Youtube, GCP).

See Intel, Boeing, GE etc.