Ah, yes, the "fuck internationalisation, we're all living in America anyway" argument.
EDIT: Data point of 1: I'm German and use a QWERTZ layout because it's a hassle to type umlauts on QWERTY even with a compose key. If I were French that'd mean I'd be using AZERTY.
That's not the argument. They just seem to believe that it's a nerdy alternative layout like Dvorak ("...even on HN"). Not everyone is familiar with international layouts.
EDIT: Data point of 1: I'm German and use a QWERTZ layout because it's a hassle to type umlauts on QWERTY even with a compose key. If I were French that'd mean I'd be using AZERTY.