since it regards a modded post I am not sure I can bring it up?
You can always bring it up!
It's very subjective... but if you note in the rules and guidelines pages (and sticky posts, for that matter), we're very up front about the fact that the spirit of the rules is more important to us than their letter and that many things are/will be very much subjective and very case-by-case.
So far, the general practice has been "If it reads like an attack, it probably is." There have been posts that all of us read which did not read like attacks, but then they were reported. When such a post is reported, it generates a thread in a closed forum area (our report system doesn't spam PM or email).
In these automatically generated report threads, we see the comment the reporting member makes as well as the quoted text of the reported post (which we can click through to see the rest of the thread for context). Sometimes that's all it takes and a mod will act on the report immediately. Other times, a mod may still not be sure action is warranted and will post their opinion in the generated thread and see what other mods think of it. It only takes one of us to read the report and review the post and say "Yeah... I can see where the reporter is coming from here; given this new understanding I do believe that there was malicious intent or if not malicious intent then that the post was accidentally inappropriate to this forum." and they'll take action. If we all* agree that the post doesn't warrant action then nobody mods it.
*Within reason. If over the course of three or four days only three of us have commented on a report thread, but all three have said they don't think it warrants action, we close that report.