https://s21.q4cdn.com/399680738/files/doc_earnings/2023/q3/p...
And no, Facebook is not lying about those numbers.
I wouldn't expect them to be lying but there to be some data hiding in the "average" part of the ARPU. We often want the median or some other percentile, not the mean.
"We define ARPU as our total revenue in a given geography during a given quarter, divided by the average of the number of MAUs in the geography at the beginning and end of the quarter."
So that is about what I expected. I'm not going to dig into this but it could be very meaningful or extremely misleading. Interesting though.