I wanted to post something similar actually and I am glad that somebody shares my concerns.
Personally, I was not insulted at all by the OP and I am a bit surprised as to responses.
I saw the “3 minutes” remark solely referring to aesthetics and looking at the alibaba-esque examples posted, I am pretty confident that we all would be able to sketch something out that would have more visual appeal quickly in a brainstorm session.
I really don’t think that the OP was suggesting a complete re-design and CAD deliverable in 3 minutes…
That being said, it is not a good request or design brief of course but I also do not think it merits these responses.
The larger issue, that Patrick is touching on, is a tendency to arrogance in the design community and of course, I am just as guilty as anyone.
It is not my intention to offend anyone and I respect every designer that has posted in this thread, but I agree that maybe this has not been handled the most gracefully.