Uh... of course it's about semantics. What josteink was complaining about was the use of a proprietary marketing term to refer to something technical.
Your interpretation is a fine one, but it's not the one that everyone shares. Specifically, it's not the sense that Apple uses the term either. Take a look at Apple's marketing page for the retina display and see if you can find anything about "resolution independence" at all.
So I guess the title of the article should be "Resolution independent high-resolution graphics for your website" then. Retina still communicates the subject better to me, since we all know this is about providing high-res images for iOS devices with Retina displays. Maybe I'm just getting too old to be anal about terminology like this.
Your interpretation is a fine one, but it's not the one that everyone shares. Specifically, it's not the sense that Apple uses the term either. Take a look at Apple's marketing page for the retina display and see if you can find anything about "resolution independence" at all.