Does proud ignorance of IDEs indicate that RMS may be impolitic or undiplomatic? Yes. Does it indicate he "is disconnected with the present technology?" In the world of C/C++, I don't think being willfully ignorant of IDEs and automated refactoring means you are out of date in your technical knowledge, as the grandparent post implied.

I do. There's a reason that CLion is becoming a thing (can't happen fast enough) and Visual Assist has been a de facto standard in C++ development on Windows for years. The tools exist, they just don't exist in Emacs.

Is RMS still involved with gcc at all? (Non-philosophically?)

He claims not doing any development himself for several years now, so I guess this means no.