Actions speak louder than words. At the end of the day, the author was not credited for doing most of the work of fixing the bug. I'd be pretty mad too.

Actions do speak louder than words. The code that ended up getting committed is the only real action here though. Everything else is words. Who wrote the original code, who wrote the commit message, what words were in the commit message. At the end of the day, if we concentrate on the action, and not the words, then we should ignore who said what and look to see if the bug was fixed and if the code works.

Don't get me wrong, I'd absolutely be annoyed too, not to get more credit than a "reported-by", but: you are not your code, and the bug got fixed.

The actions include finding the bug, debugging it, and proposing a strategy for the fix that ended up being adopted in practice. All stuff the maintainer did not do but took credit for.

Actions do speak loudly - such as misrepresenting other people's statements so they sound worse than they are.

He didn't actually author the patch. He did get a reported by credit. If you look through the thread, he clearly got some mentorship from the maintainers because the first attempts weren't maintainable.