If you need $50 to buy a ticket to a concert and a BA librarian gives you a free ticket to that concert. Do you still need $50 dollars to get into the concert?
If you need to be obscured for cover to provide you a cover save and a BA librarian provides you a free cover save. Do you still need to be obscured?
Logic is incorrect.
correct logic:
You need to have a car and $50, to buy a ticket, to go the concert, the
BA librarian gives you the ticket, but you still need the car to get there.