The article is wrong about reverts (in my opinion). If a breaking change is introduced, and then removed, the removal should also most likely be considered a breaking change (both the addition and removal are changing your API). So it is correct that a major version bump should occur when reverting. Once a package has been published, the ship has sailed.

My apologies, I missed this on first read due to the indentation style. That said, I don't agree on the commentary.

Why on Earth are people not writing commit messages for their reverts? They should have semantic commit messages just the same as any other commit.

Unless the point is that they're not following per-commit CD, and if you commit then revert that commit before a release was made. That sounds like a process failure. Which of course, process isn't infallible, and neither is the automated version management. If you screw up, use an escape hatch — just like reverting a commit that had previously gone through code review and been merged.

Re: change log generation. The article says change logs shouldn't have commit messages. I agree. Many tools (e.g. Changesets https://github.com/changesets/changesets) use the semantic commit type to sort change log entries, but require you to write those user facing change log entries separately.