Well, I think that's the official routes exhausted.
I'd agree that a translation issue is unlikely to get even the initial confirmations much less the upvotes to give it a snowball's chance in hell of climbing the pile of issues, given that many issues have lots of votes and still linger on for years. On the positive side, a translation issue ought to be simple to fix - much simpler than actual bugs in UI code, for example.
It may be possible/permissible to use a support ticket to alert the devs to the issue.