>What on earth do you do with that many devs on a project like Messenger
I thought the point was to minimize the amount of talented devs who instead try to do their own startups that could compete with Messenger, by hiring them and paying them well so they've got no appetite to try their own thing.
So now we have every tom, dick, and harry in the world using Claude Code to compete with Messenger. Sounds like a disaster :)
A more charitable explanation here is that every manager is incentivised to lead large projects with lots of people on them, which is how they get promoted, and can ensure that their team has promotion and expansion budgets.