I remember wondering the same thing, since it seemed like for a while there was a new high-profile "farewell" blog post every couple months. But there were also several big "new additions" blog posts too, so I wasn't sure how everything shook out, numbers-wise.
Here's my best attempt to figure out how things stand. On 12/31/2019, in
a thread where people were raising these kinds of worries, Lisa Stevens dropped in and said: "Paizo isn't smaller, it is larger than it has ever been. And we are growing even more in the coming months."
So, assuming she isn't lying, Paizo at the end of last year was as large as it has ever been. Since then, there have been two blog posts listing new hires and promotions:
Paizo People, Additions and Promotions (2/6/2020)
Paizo People, Spring 2020 (4/10/2020)
Most of these are promotions or title changes, but 9 of them seem to be new hires. And I didn't see any "farewell" blog posts since Lisa's 12/31/2019 post.
Putting that together, that would seem to indicate that Paizo has grown, numbers-wise, and so remains larger than it's ever been.
(This assumes, of course, that there haven't been "invisible" departures between 12/31/2019 and 4/10/2020 that weren't accompanied by "farewell" blog posts. But I have no way of checking that.)