Xeshra: Just admit your failure instead of becoming a clown, telling fairy tales.
Just because some games may work using your tricks... it is not the same for every game. Every single entertainer telling me "their Steam games magically works by replacing a few files and whatelse"... instantly lose their good mood as soon as i ask them to use magics on a single game. I can bring up a huge list... of games who will fail to work using such "cheap tricks".
You follow a strange black-and-white all-or-nothing logic. Did anyone here in this thread offer you a 100%-working guarantee?
OP started with a 1-out-of-10 premise. If Goldberg is able to shift this ratio towards a working 6-out-of-10, then I'd call this a clear win. Goldberg is a handy tool to liberate those games which are technically already DRM-free but still held in the prison of Steam's ecosystem by a few stupid API dependencies (achievements, updates, news, overlay, ...).
Re: FFXIII
You can't get your AAA, DRM-ed, Denuvo-infested, anti-cheat-locked, client-login always-online service-games working with Goldberg? Geez, was a surprise! That negates everything.... No wait, it doesn't. -.-