It seems there's been a misunderstanding or wrong word choice on Claude's part. What he intended to say was that Frewps' Arabic language skills weren't good. However, his phrasing was misinterpreted, leading you to believe he was mocking all people living in Arab countries.

I understand that mistakes were made on both sides. Claude should have used more appropriate language, especially in such sensitive situations. On your end, even if you misunderstood the message, you shouldn't have insulted his country in return. A better approach would have been to reach out and ask for clarification, or to create a discussion topic about it.
Thank you for the report though. I hope this explanation clarifies things. I'll leave this open for another day in case you wish to add anything further.