SQL injection falls into a general class of vulnerabilities where user input escapes the data plane and get injected into the control plane. I was looking for the article to provide insight on how a new database or query+execution language would avoid this entire class of vulnerabilities, because that is what I would expect as a solution. So yeah, picking on RDBMS for SQL injection is fairly silly, and worse, it betrays ignorance on the subject.

To extend his argument, browsers are responsible for XSS.