I have no doubt that you're right, but this isn't about what you think or what randfish thinks: it's about what the people he's trying to recruit think. Speaking as a member of his potential recruitment pool, there's nothing in the job ad that distinguishes SEOmoz from any other company talking about "SEO" or "improv[ing] their rankings in search engines", and as a result I get the impression that SEOmoz is just another bunch of sleazeballs making money by ruining the Internet for everyone else.

If that is true, then great: they're marketing themselves effectively. If it's not true, they might not want to use terminology so directly associated with the asshole spammers of the world.