(I think this has nothing to do with Texinfo, but for TeX Live purposes ...)
`bplain' would do the same, but there is (currently) no soft link to the `tex' binary. (Norbert, bplain = babel plain) Would it useful to have? Although there is a bplain.ini file, I see no sign that there was ever a bplain executable. Not sure it would mean much to add it now, since evidently no one is using it.