Re: I'll tell you what's "rude"...
I have, admittedly only once, encountered Cinnamon as a surname. So while it might not be acceptable in the Netherlands (or is it only Dutch surnames that are blacklisted?) it would be pretty production-line in the USA, along with all the Taylors and Camerons etc.
The time I saw it was on a list of successful examination candidates. The full name of the child was Grant David Cinnamon, and in my head I instantly heard: " ... but don't let him near the ginger" ... wonder if there's a rule in Malaysia that names can't be sentences!