So, ESR started a thread titled On being web-friendly and why info must die

I think the major reason this has not happened is because the Emacs development culture is still largely stuck in a pre-Web mindset. There are a number of historically contingent reasons for this, but enumerating them is not really important. What matters is recognizing that this is a problem and fixing it.

I agree with this, and I have expressed similar concerns. I also actually really like reading TeXInfo (but not writing it) in emacs, but I know that's a "living in the past, dude" kind of thing. I'm not sure TeXInfo should be mandatory for new GNU projects.

That said, here's where I'm a bit surprised:

I have discussed this with RMS and, pending my ability to actually write proper translation tools, we have agreed on asciidoc as a new master format. This is what should replace Texinfo and the gallimaufry of ad-hoc text files like /etc/CONTRIBUTE and the admin/notes stuff.

Huh, why not spend energy on improving TeXInfo's HTML output? Maybe not make TeXInfo mandatory for new GNU projects, but wouldn't that be a faster way to get things done?