Could the wording in the post notice which is displayed when the post content is hidden from non-moderators who can see deleted posts (done when there is a helpful spam or rude/abusive flag) be updated from:
This post is hidden. It was flagged as spam or offensive content ...
to something along the lines of:
This post is hidden. It was flagged as spam, offensive content, plagiarism, or other violation of the Stack Exchange Terms of Service ...
How this request came about
On music.SE, a couple of posts were deleted because they were "flagged as spam or offensive content." But reading both posts (in the revision history), neither seemed spammy or offensive.
When I asked, a mod explained that the content was plagiarized and such posts get deleted as spam/offensive content.
That makes sense now that it's been explained, but could the deletion message be updated to mention plagiarism — and, perhaps, "other violations of our terms of service." That could save others the confusion I encountered.