As a Gentoo dev, your comment made me chuckle (though I'm sadly out of mod points). I know we're a small community - both dev and user - with an ever sticky reputation of having ricer users (http://funroll-loops.org/ anyone? though the site looks dead).
Back on topic, he does seem to like singling Gentoo out, and has done so on numerous occasions (including TFA).
Why Gentoo in particular? Beats me. Maybe it's because of eudev (I don't know anyone running it)? Maybe it's because OpenRC is still the default? Maybe it's because he's been trolled by someone "representing" the entire Gentoo community? I really don't know, but I definitely don't like have mud slung at the entire project/distribution when we have 200+ active developers.