Fun fact: LEaP’s original author, Christian Schafmeister, went on to create a Common Lisp implementation that uses C++ and LLVM for applications in molecular nanotechnology: https://www.youtube.com/watch?v=8X69_42Mj-g
not hating on the great amber - but why LEaP on the front page of HN with no context...?
happy to see some light shown on the grim state of comp chem file formats and their shockingly lossy interconversion but I'm not sure that was the OP's intent?
What does deprecation of an upstream file format - still the most widely-used one, by the way - have to do with support of said format by someone else's software? If anything, it illustrates backward compatibility. And it has nothing to do with a web page describing the use of LEaP. Your comment is simply not germane.
LEaP supports the mol2 format as illustrated in the OP's link, which is substantially better than the PDB format; but again, this thread has nothing to do with file formats and everything to do with the functionality of LEaP.