It's still valuable info. Like let's say you actually made it thorough all the rounds at Google per your example, and are 'stuck' in hiring committee. That's a

It's still valuable info. Like let's say you actually made it thorough all the rounds at Google per your example, and are 'stuck' in hiring committee. That's a huge signal to you that you are in striking distance of the level you interviewed for, even if you don't ultimately make it this time. That means you can for example use levels.fyi number for that level at Google as 'something that applies to me'