To your point, while I haven't interviewed with Google, don't they actually do a number of the things you're talking about (e.g. ask about system design or ask

To your point, while I haven't interviewed with Google, don't they actually do a number of the things you're talking about (e.g. ask about system design or ask you to look at some existing code)? I'm guessing every interviewer isn't asking you some variation of "find a loop in a linked list".