I'm sure that I'm one of the guilty parties here, but the posts that come to mind for me are generally either someone relatively new who's really excited about how cool SN is or more seasoned stackers who feel like others might not be getting as much as they can out of their SN experience (and that SN would be even better if they did).

I agree, though, that there should be fewer posts like that as the site matures. If onboarding new stackers gets more streamlined, the already existing posts can become more evergreen.