> Their active users have grown orders of magnitude since then

That's a bit of an overstatement. https://www.statista.com/statistics/264810/number-of-monthly....

Didn't Facebook have over a billion users then? There's about 8 billion people on this planet, a good 7th or so are blocked from Facebook entirely. Even then, orders of magnitude would be 100, 1000 billion and upwards.

They _can't_ grow orders of magnitude.

> Their active users have grown orders of magnitude since then.

True if we are in base 2. Well, actually that would be "order"