We’ll have to disagree then.
From my perspective, if you put the text “Back” (note - not a token or string table lookup, a piece of translatable text) in asset 1, and “Back” in asset 2, you should not have to send two entries for “Back” to your localisation company. You should be able to use the same text and it should ONLY put the one version in the PO file.
The risk is only one of the assets gets translated and the other asset shows the English (or whatever you have as default).