Why do you assume everyone in the company (including folks working on infra) are authors on the paper? That’s possible, of course, but isn’t it unlikely?
That's the only information I have. That said, High-Flyer had about 160 people, total, in 2021. Given that F3 was in production in 2019, 60 people is a generous estimation.
the highflyer team are pretty well resourced.... think they have more than 10 people