Yeah, I understand why glGenBuffersARB_p (and the other ARB stuff) is gone in OpenGL::Modern.

As of your question about the availability of OpenGL 2: I simply don't know. The OpenGL docs have a long list of interfaces, about 100 of them with ARB in their names, indicating registered extensions. Is that complete with regard to OpenGL 2? I've no idea.

I have only just started to examine OpenGL, which was quite a journey. The Perl modules' documentation does not give much insight, and all the external links from the Wikipedia page Perl OpenGL are stale. I know that I'm currently using ancient interfaces, following an ancient guide. but hey, this stuff still works!