So is this topic open to PR or is still under discussion?
I think is always nice to have an easy way to see version. Even if you are expert and you know how to find the version in the code, is way easier and faster to find it somewhere in the frontend browser.
That’s why i’m bit concern about hidden route. How people will know that /version even exists?
Personally i think if you want to give this information to the end user it should be more or less visible, like in the about page or in the footer or as tab…
Otherwise going to a hidden, non-discoverable route is more or less the same as look for this info in the view source: something that just developers would do.