does javascript reduce "accessibility" as in: does it keep average users and handicapped users from accessing the pages?

The usual texinfo output is probably more accessible from a technical standpoint, but from a usage perspective it is not.

Markup formats like ReST/Sphinx are much more semantic and improve accessibility for the impaired as well. Simple JS is not the problem here.

> The usual texinfo output is probably more accessible from a technical standpoint, but from a usage perspective it is not.

Can't possibly agree with that. Slap a fancy clean font on it and it prob solves half the issues people have with it.

From a usage perspective this page is crippled compared with the original.

> does it keep average users and handicapped users from accessing the pages?

If the third part tools they need to navigate and consume the content stop working, then yes, yes it does.