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by linkjuice4all 1038 days ago
It’s possible they examined the server logs for requests from GoogleBot and found it wasting time on old content (this was not mentioned in the article but would be a very telling data point beyond just “engagement metrics”).

There’s some methodology to trying to direct Google crawls to certain sections of the site first - but typically Google already has a lot of your URLs indexed and it’s just refreshing from that list.