I've worked at a few different FAANG's (including this one). I've participated in some of these engineering blog posts.

They will never tell you anything that is real-world relevant for you.

At best, you might get some kind of _theoretical_ insight. It's because they're operating at a scale that just isn't realistic for hobby developers.

But they're still engineers just the same as you and me. So they write blogs like this. And it's interesting! I love to read them.