[mecameron]

Two biggest issues: 1. This just reeks of "No true Scotsman". My biggest issue with this REST purist rhetoric is that it seems no one can actually implement REST, but apparently if someone could it would solve most/all of our problems. But after many years of smart people unable to implement REST properly according to these critics, then maybe the problem is with REST.

2. "If you implement REST, you use content negotiation, and thereby eliminate versioning and typing issues"

The author is conflating the issue of identifying a client version and actually responding with appropriate client specific version data. It's one thing to identify which version via some mechanism (e.g. URL, query string, content type), but you still need the latest code to handle all of the versions you want to support. The author seems to believe that that using content type will solve both problems, whereas the real problem is actually having an implementation that responds with the right client specific data and not break between releases.