Ah, I see. I should've probably continue reading it before asking. However, it does say something about the algorithm if it scores Translate higher than AdWords (it should probably be first, even before Search - I think they're more likely to return results completely based on AdWords with no organic results at all than shut down AdWords and return only organic results).

Statistical algorithms that make predictions based on signals can't make good predictions about something that is unlike they've seen before. The algorithm being used does consider profitability. Even if you added "massive profitability" as a signal to AdWords, an algorithm would still struggle because it's the first and only data point like that for Google. They have decent other businesses (hosting, enterprise, etc.), but none in the same class as AdWords.

No, it says something about adwords compared to other google services.

Normal predictors for shutting down google services doesn't apply to it, because it is very different in its behavior than other google services. That doesn't make it a bad algorithm.