If his tools work, they work. If the challenge is fake or if you think its fake just don't participate in it.
There is no single
tool which he is the author. There is no one single program written by him.
If you want reliability - go and find the original version, from the tool's author, not from that xero guy.
Maybe he has small dick or other complexes and that's why he is not using "fork" option on source repos, he wants projects to look like they were made by him?
I respect him for amount of time he must spend to monitor source repos and copy/paste diffs

So guys, you do not need to worry about virus or other bug hidden in his closed wif500 program, he is not able to do something like that.