I have a good friend that works for one of the giants(I can't say which one for obvious reasons but S&P 500). He's been working there for quite a while now, so far he hasn't seen what the project he works on looks like, has the repo cloned and knows what language is used but nothing beyond that. Everything is slopped together. His project is the authentication and authorization system for all the company products. In his own words "I hit Tab all day long and write 'this is intended' in the reviews, which are all ai, there is no human in the loop. This is what we are told to do by the CEO and CTO unironically. If something breaks, no one knows how any of this works since no one has seen the actual code. Our performance reviews are based on how many tokens we've used, not what we have done". I suspect this is the case in many companies now so it's not unreasonable to think that there are no actual code reviews.