I think we should make Reply Tool available as a beta feature on remaining Wikipedias with language variants (ganwiki, iuwiki, kkwiki, kuwiki, tgwiki, uzwiki – Gan, Inuktitut, Kazakh, Kurdish, Tajik, and Uzbek).
In T266303 we skipped them, because we weren't sure if the tool will deal correctly with language variants. But it has been enabled and working fine for a while now on srwiki and zhwiki, which also use language variants (and we discovered and fixed a few bugs). I think we can confidently enable it there now, and don't need to treat these wikis specially any more.