Of course, that's a possibility. I like to plan with the TT card and for larger tours I still have to make adjustments after transferring it to the rider because the card on the device and the MRA do not match 100%.
I will not have the problem mentioned so often because I will not be traveling a lot in the areas where the place names are not legible for me.
Nevertheless, I think that for many users it would be helpful and more confusing if the place names appeared at least in English. That's why I drew your attention to it. And TT itself has a map in MyDrive for planning, on which the place names are shown in English.