I still don't see how any of this validates such an immature response from the copied company. Don't they have a PR guy or something to shut them up before they say things they might regret?
Why would they regret what they said? We should all be glad they called them out in such a public and unequivocal fashion. It means that scumbags might think twice next time before ripping off other people's work verbatim. Your response would have been more apropos if DHH's allegations had turned out premature, but the reality is that the extent of their plagiarism went much further than initially assumed.
Calling them out in no uncertain terms was a community service. Let's not quibble over vocabulary.
Well this is very subjective, and I can understand your views, but I just don't think it is professional to be impolite in this manner. Being right should not give you the right to be rude! I can see where you're coming from though.