Patches tend not to be released around here as it is still directly copyrighted works you are sharing via the patch. Legally speaking it is not really any different to linking up a rip of the audio, indeed as there are sdat players then yeah.
Things like the cheat above are OK, as might be patches to unlock it if it is buried in a game, and for more complex undubs someone might make a patch to extract one game, trim it down, modify what needs doing and insert it back into the host game before rebuilding it all as a workaround for the copyright issue.