Some types of errors might be easier to make in one language versus another, but a language that through syntax eliminate the possibility of all errors, is of course a ridiculous notion. Cherry picking particular error types that are avoidable in the authors language of choice, does not prove anything.

The concept of why code does not matter, comes from development management literature. It's not a case of actually meaning "I'm ashamed of the language and the techniques I use". That's an awfully developer-centered point of view.

The influential factors of a successful software project are mainly the quality of the people involved. Next product scope and from there a huge drop down to development process, and finally technology, i.e language.

It's been statistically shown that barring a crazily bad technology choice (Visual Basic for the space shuttle kind of bad), language has very little influence on the success of a project.

That's of course not a nice thing to hear for a developer who's convinced his language of choice is the one true language. Regardless, it's well established knowledge, gained years and years ago through statistical analysis of thousands of projects.