I think with code, there are a million ways to clone something (...especially when you haven't seen the source) so it's harder for developers to understand what it feels like when you see someone copy your designs (to clarify, I'm speaking generally here.) Best allusion I can think of is joke stealing. A lot of work can go into a one liner. Does it matter if it took 5 seconds (or 11 hours in this case) to copy it?
Fact is, if Dustin hadn't done anything innovative (ie, worth cloning), we wouldn't be having this conversation.