@bolwerk – Since becoming a moderator, I have encountered comments in discussions that were beyond the scope of my knowledge. When that happens, we usually check with the other mod team members for another opinion. There have been times that I will reach out to the person who commented to ask for clarification, as well.
If something “moddable” is posted while I am active online, I try to reach out to the user ASAP so they can make revisions during the editing window – but it’s not always possible to see everything happening on the site at once. Once the 10-minute window closes, we are very limited, and so removing a comment that is in violation is our only option.
None of us will claim to know everything about everything and none of us will claim to be perfect. We are volunteers trying our best to maintain the site according to the founders’ guidelines, which isn’t always easy. When something is questionable, we seek consensus – but sometimes no one else is active, and we have to make unilateral decisions.
I had one sentence about writing standards. The other suggested that users keep the guidelines and writing standards in mind when they are composing their comments – before they hit the “Answer” button. When people clearly struggle with the language, we do send the PMs to explain the reason for the guidelines and to offer help; we might leave the comment up if it is fairly helpful and reasonably intelligible, but will remove low-quality comments if they do not contribute significantly to the conversation.
Some members compose their comments in word-processing programs that will check their spelling and grammar, then copy and paste their replies to the site, and I have recommended that to those that struggle, since they might find that helpful.