This was published in Nature, I'm pretty sure the reviewers understand and account for that. HN and reasonably educated people always think this is some huge gotcha, second only to "CORRELATION != CAUSATION!!!!"
Say what you want about the "correlation doesn't imply causation", but many people do not understand why that is. As a shorthand for "hey, you don't know the statistics behind this, so don't take the pretty picture at face value", it's pretty good.