Zuckerberg is speaking in a context where there are actual legal consequences for not telling the truth. So I don't see how he could be lying. But also I'm doing the "what would have to be true for this to be true?" logic & unless the vast bulk of users are in non-anglophone countries, it doesn't add up.
Look at the "numbers" on Zuckerberg's announcement of 100M+ DAU. I made *checks* six posts on Bluesky (a site with 25M users EVER) with higher metrics than this in the last *week*. Is that odd?