The tips written there should (hopefully) be fairly obvious to seasoned programmers, I agree. However, I find that this is particularly helpful in that it base

The tips written there should (hopefully) be fairly obvious to seasoned programmers, I agree. However, I find that this is particularly helpful in that it based on an actual working code base, instead of contrived examples. It demonstrates that writing clean code isn't just a pointless academic exercise, there is a purpose to it.