MP – In my opinion when a writer admits their writing isn’t Kosher -they usually mean it’s not clean. If they just thought that it’s just not appropriate for the ultra -Frum community, I think she would have just said that! You can usually tell by the way a person speaks/writes what they mean. I could be wrong, but that would be the exception, not the rule.
You personally don’t sound MO to me, maybe just more modern, not so Yeshivish.
The girl sounds very much from the MO crowd, which really most of them aren’t really Frum.