(Non-Google GAFAM anecdote)
Same, my team has gone way through the roof in productivity, delivering more than ever. At some point we actually ran out of stories to do even with more work and had to come up with more.
As a note, over than half the team already WFH'd at least 1 day a week in normal conditions, and there was sufficient team trust that everyone would do the right thing, nobody minded if you ran out for errands or lunch unannounced - people would quickly check if any meetings were scheduled usually before running out, items were completed ahead of schedule. I've been doing a 30m-1h nap in the middle of the day and that's helped a lot too.
I've also managed to not catch a cold or flu for the first time ever.
My previous daily commute was min 1-2hrs each way in completely stopped traffic on a standing room only bus/train with multiple transfers and involved waking up even earlier than that to not be refused entry to an overfilled bus.
I've seen a teammate or two be playing actual games (ranked apex legends in this case) during meetings but honestly, they were still responding, answered questions, and that meeting could have been a slack thread but some other teams are not nearly as competent at reading README.md.