A fortune pick III seems to give better results than the Industrial Grinder for all of the blocks that a silk touch pick would be effective on. There are many reasons one could want silk touched ores; silk touch exists in Vanilla for a reason, after all. Some people just want ore blocks from gems, redstone, coal, and so on. Sure, as far as Greg is concerned within his own mod, it's entirely within Greg's power within to change his own mod, and even within Greg's power to make nerfing other mods a possibility as well, but to suggest the only reason that someone would want to Silk Touch ores (and to suggest that no machine should exist to automatically do so) only because of GregTech is silly. On top of it, I wonder why go out and ignore his original question and treat it like he asked, "Please tell me why I can't automatically silk touch mine ores with other machines?" rather than the simple question he did ask.