If it has useful information, why is it looked down on?
I'm not sure what community he's talking about, but I can well imagine the Apple Tribe looking down on anything but pure OEM equipment, and anything that allows such a thing.
Because they also have "proprietary" tools (UniBeast, MultiBeast) which at one point required a paid sub iirc which ticked off the osx86 community that was all about FOSS.