The implication is that if one were truly too good for HN, then one would already know about "the next HN": that exclusive comment site at which sober mature discussion among intelligent sophisticated people takes place much as it used to long ago on HN. Which is funny not least because the level of discussion here even today seems vastly superior to what one finds elsewhere online. Part of that quality, may be a willingness to welcome those for whom English is a second language.