If I had a time machine, I'd use it to identify who in my life gave me this same "advice" and gift them a copy of their obituary from the future.
For a commercial product, yours is honest feedback.
But this isn't that. You popped into a literal show-and-tell to heckle some kid proud of his macaroni art. You didn't even critique the product, just insulted its maker. What the hell is wrong with you to think this is appropriate, or even helpful?
