Fair enough, I suppose, but I very much doubt I'm alone in that when I see a locked thread, that's one of the first threads I open to see what happened and why it was locked. That little padlock is as big a flare as needs to be sent up if people are acting stupidly. People are going to read the thread and probably, since it this case the locking was entirely valid, come up with the same conclusion you have.
Instead, now we've got this thread which is inflammatory to the people involved and will pretty much have to be locked. I don't like locking threads. Moreover, you're trying to point out the humor value of another thread of people acting childish and insulting each other by... doing more or less the same thing? It's the equivalent of laughing at the kid who's sitting in the corner - not really any better than him, and likely to get you put right next to him. I just don't see the point.