> So I'm always going to comment on these things, even if I'm considered a "domain expert" for that language. But that takes time away from me investigating other issues the question might have. If someone else has already taken care of answering with this easy clean-up, then a domain expert can invest more focus on other, more difficult issues.
Remember, on Code Review, any and all aspects of the code are up for review. And several things that people commonly get wrong are pretty easy to comment on even if you know nothing about the language.