It is indeed, by my own subjective observation.

But that doesn't mean it's the fault of the engineers - and most likely it isn't.

Rather, the product people (who are also not dummies) basically realized that "dumber" results were more profitable, for various reasons -- most likely to do with "engagement" and prioritizing what 90 percent of the users will versus the needs of the other 10 percent.

Yet one should be very skeptical about such claims. We don't know the parameters what they are optimizing for so how can we even asses it's performance related to those?