Hey Glad to see you re okay As for proof that people have been defining vestigial with still being able to have some functions that could have been worded better since the theory began take a look at the sources I added to the Vestigial structures article Darwin Weismann and Wiedersheim who is credited with coining the term vestigial to refer to them all used it in this way right from the beginning in the 19th century So it isn t a redefinition of the term to match a discovery of function it has always meant this Hope this helps but I suspect you will still disagree