One of the most interesting pieces of insight we got at the time was from Matthew Yglesias of Vox Media, who tweeted[1] about discomfort with what was going on in a private media Slack group the day the NYT was reportedly going through turmoil. The tweets were shortly deleted, for clear reasons. From his description, it sounded like an effective struggle session was taking place in the Slack channel, which had been kicked off by the Cotton op-ed.
So the direction has been mounting for years, yes. But the significant shift in internal leadership, direction, and principles within the last few weeks cannot be overestimated.
[1]: https://twitter.com/JimLaheyTPBs/status/1268718489654697984