"important capabilities"? It's a fairly exotic feature nearly nobody is actually using, so the only people I'd expect to know about it are old-timey sysadmins and security people who've looked into stuff like discussed in the article. And while "lead of the anti-abuse team" is a security role, there are many possible backgrounds where you'd never come across this, and anti-abuse likely is working on a higher level.

Testing for stuff like that would be worse trivia checks than the algorithm-bingo people like to complain about in Google developer interviews.