Jason Schreier’s original article is here
For those who encounter a paywall, an archived version is here

The important bit in his article:

Last year, Overwatch 2 received a paid pack of three PvE story missions that sold poorly, according to people familiar with the business, which was a major reason for the cratering bonuses. In January, as part of a company-wide reduction in its work force, the majority of the team behind Overwatch 2’s PvE was laid off.
Overwatch 2 developers were informed that the company does not plan to finish any of the remaining planned PvE content and will instead double down on competitive player vs. player gameplay, according to the people familiar.