I think he's just saying for a production level program, it's just easier and safer to implement an already tried and proven encryption algorithm. If you're concerned about security in the slightest, then you might as well use something like RSA and know that nobody will ever crack the encryption unless they get your private key.
It's a ballot program, so it doesn't matter what encryption it has. I just want to have the files protected from prying eyes that don't know what a decompiler is.
Then why even bother with that mess of an algorithm you posted in that other thread?
Simply XORing every byte by a constant or something equally mundane should work reasonably well.