Technically, no one owns one of these yet, so the expressed remark is directed at the design, and decisions behind the design. Also, the reasoning is provided as well. If it crosses the line, it's mostly because of the profanity in itself, though I don't see the need for a reprimand.

It's not the profanity, but the intent behind the statement with the profanity. Remove the profanity, and it's still not a civil comment. It poisons discussion.

I would say this face to face and regularly do. Honesty is the best policy.