My comment wasn't directed at 0.1% pile. It's directed at mid-tier, good-not-great CS programs that FB is both targeting in ways that other FAANGs don't, and also have put on heavy marketing programs at. Signal or noise, hard to say, but they wouldn't be doing it if the need didn't exist .
What matters more is the self-fulfilling prophecy of if the PMs/EMs with the cultural sway decide to check out. It's incorrect to think these types don't matter due to the externalities tied to them, not just their management talent (there are a lot of good managers). An example is will the future Sheryl Sandbergs work, or not work at FB. These dinner table conversations are what starts to decide that, and their decision has a material impact on the company's future.