Author here. I spent Thursday evening with my vocal teacher, where we mostly giggled because I couldn't hit the F required to start Billy Joel's "Movin' Out". So yes, it was most decidedly humorous hyperbole, and it has been taken this way by like, everyone that's not on Hackernews. Genuinely astonished that it isn't as obvious to other people as it was to you, but something I learned quickly is that you simply can't control how your words are perceived, and it isn't possible to waterproof sufficient long-form content.

To be honest, this is kind of nice, because my girlfriend recently told me that I'm "extremely unthreatening" because of all the improv theater, fencing, music, reading, and writing. Now I know at least a few people on the internet are threatened by me. I'm a loose cannon, on the verge of totally unrestrained violence. I'm two steps removed from a dinosaur, and if someone looks at me funny, who KNOWS what'll happen.