Minor clarification: moderators do not have the ability to directly revoke the accepted status from an answer (relevant MSE). I suspect deleting and undeleting an answer might remove the checkmark, but as you said, mods should not judge technical accuracy.

Ah, perhaps I should clarify that with the current system, comments cannot be downvoted, and upvotes on comments do not contribute to reputation. The asymmetry is a bit unintuitive, admittedly. Fortunately, there are a couple ways to address an anonymous downvote. Other users may see the question, find it perfectly fine, and upvote it. If the question is in need of adjustment, users can still gently speculate on what someone may have found lacking. Better yet, someone may take the time to edit the post to bring it into line with best practices. Edits can include helpful summaries/explanations.

There's even a third copy, now deleted, but with profile links intact.

@simlev I'd say it's worth reporting because the editor preview should show users how their post is going to look. It's very nice that there's a way to make the final version display as you want, but there's still a discrepancy between the preview and the final version.

@Burgi Heh, I considered using PowerShell as an example, but didn't because one could argue that it's vaguely the tool of an OS power user, and I was going more for the end user applications. You can use PowerShell to automate Excel, though!