So much imagination!
The Piri Reis map is well dissected in the article by Dutch, Univ. Wisconsin, Green Bay:
Piri Reis pseudoscience

It shows nothing credible below the bulge of Brazil.
All of the claims by 282RA have been discredited, hence the lack of mention in the history books.

The Waldseemuller map's depiction of a separation of the Americas from Asia was based on "Mundus Novus," attrib. Vespucci, published, among others, by the Waldseemuller group. This book showed that the Americas could not be connected to Asia. Again, much imagination has to be brought into play to arrive at the fanciful reading of the map by 282RA.