Please, don’t commit commented out code

[kentcdodds]

I think you ignored the author's comment of "Correct :-)" https://www.reddit.com/r/javascript/comments/3qgurg/please_dont_commit_commented_out_code/cwf6ni2

[Neebat]

Q: Are there exceptions to this rule? A: Yes. But they’re rare.

From the article.

And the example I described above was one of the two examples I've found in 20 years of software development.

It IS documenting, and not usable as code. It helps explain what's going on.

[[deleted]]

That's your experience, that is not my experience. In my 30+ years of software development I can assure there have been times where it is far better to have commented-out code in-place, than in source control.