"Do you know who I am?" is probably a better answer. The "humble" answer is just an amusing in-joke at the expense of the poster. ("Haha, look at that dumb n00b who doesn't know who Rasmus is!" There is even a comment below that pretty much says this exactly.)

"I'm the creator of PHP. I am not going to fix this," would have ended the discussion much sooner and with less hurt feelings.