Longer than that, for sure. They were deploying ML systems at least as far back as 2011.[0]

[0] https://en.wikipedia.org/wiki/EdgeRank

And yet their quaterly and annual reports dont mention it at all till 2022 and the team are now being "helped out" by new $100mil talent.

There is an amazing team there that did the work, I am just saying it wasnt the visionaries vision that made that happen - and if it was they certainly wouldnt have let the Ai team publish or opensource their work.