While MattKC videos aren't the only topic of discussion here, they are probably the primary way people found out about this place, so here's a forum for discussing them.
Can’t the author just a be a little naughty, and steal some of the source code? Do they use the source code as a comparison? Seems like a lot of reinventing wheels
According to the project README, he didn't know there was a leak when he made it, and he mostly just did it for fun/challenge anyway. I don't think it's any deeper than that.