I'd like to put forth the "barriers to progress" possibility, though I admit I don't entirely see the value in speculation and I recognize that I'm only writing out of a sense of disquiet and loss.
Obviously I have no authority to speak on this matter, as nobody here really does, and this is therefore purely conjecture.
It seems to me that these questions...
Do these actions by SE represent a shift in strategy? Is SE giving up on community management, and concentrating on selling Teams and SE Enterprise?
... imply that a focus on Teams and SE Enterprise at the exclusion of Q&A are the way strategy is expected to shift.
Other answers have thus far been suggesting that the alternative explanation is simply one of cost-cutting.
As an (outside, mainly) observer of the the Mess that's been going on lately, I'd like to raise another possibility:
For whatever reason, there has been an apparent concerted effort over recent months to fundamentally reshape the social fabric of the platform. The "Welcoming" and "Pronouns" issues are the obvious examples. Although the underlying calculation is most likely profit-related somehow, it is possible there's a social-consciousness driver of some sort too.
While everyone involved is seemingly disallowed from actually discussing the situation, I think it is not unreasonable to think that Shog9 and Robert Cartaino would have been stubborn holdouts for preserving the core philosophy of the site that they were so instrumental in crafting and maintaining over the years. Stubborn, and undoubtedly influential, even internally. So much so that to continue "the changes" it made sense to remove the barriers to progress.
The ultimate goal? I have no clue. Seemingly though it isn't to continue to be the best Q&A site in existence, unfortunately.
Or, maybe their salaries weren't worth it. /sarcasm