Reinstalling a trim tag is just another part of restoration. With reasearch and an original set of rivets it will be undetectable. I have done dozens all from cars that have been dipped or blasted.
To say that a car that has been dipped can not be a daily driver is not true too many people think your car is going to magically continue to turn into a pile of rust after being dipped. After a car is dipped treatments can be applied so that it will neutralize the dipping process and to treat and coat the metal to stabilize and protect it.
I would be more concerned with leaving rust untreated inside a frame rail or between panels!!
Rich