That's such patently absurd bullshit. Google has a code review process. Almost any large tech company has this today. The review process is to ensure that it's a team effort when a major screw-up happens. You don't just let some new employee merge untested and unreviewed code.

You know who I always see harming the company with outages and downtime? Seniors and managers that cut corners. I've had managers before that put in place all these safe guards that go out the window the very second a deadline is threatened. They merge untested code. They route traffic haphazardly. They fuck around with DNS or user accounts on a whim. Because no one is there to tell them not to. They believe they are the exception. The rules are for the minions below them. If you're working late on a weekend cleaning up a huge mess, there is a good chance it's because some manager-turned-arsonist fucked around with the process. They cut corners on the planning, the implementation, or the roll-out.

Even on our systems, we had so many redundancies and test servers run, that even when a mistake did run through (which was exceedingly rare, given the testing), the roll back was quick. A single dev, especially a new hire, was unable to make multi-million dollar mistakes. It had to be several systems to fail, in order to be released to the wild. I can't believe any of the FAANG companies got to where they are with such a "cowboy" attitude as to say, "it's your third day, push that untested code straight to prod".

Edit: autocorrect hates me

Google is optimizing for the wrong things. The reason Google has hard interviews is to minimize attrition and make everyone who passes the interview feel smart.

They is false and hyperbole to justify your argument. If a single employee can cost a big company like Google multi-millions, then there is a company structure problem. You make it sound like there are no system of checks. The very definition of being 1 in 10,000 employees at big corp is that no one is important enough to cost the company multi-millions.

So Google had one good product in 20+ years. Lol. At least they have 7 interviews to make sure they don't make a 'bad hire'.