I also strongly suspect these numbers are misleading. I was offered another pair for free on opening a verizon fiber account. I'm betting there's some scheme to pump up these numbers to make it look like they're catching on. Though perhaps this skepticism is negated by the increase in production.
Granted, I've seen a couple tiktokers use something like them, but I don't know what the experience is like getting that video out of Meta's grasp.
EDIT: added a couple thoughts.