"unsubstantiated information" -- you said something as if it's a fact without providing evidence. You should be pleased, not offended. In most cases the moderated content is something that could land you in a legal pickle.
You have three options of you get moderated for unsubstantiated information:
1) Re-post with evidence.
2) Re-post a more carefully worded opinion.
3) Whine incessantly about getting moderated.