I never knew the first port was done in uruguay, thanks for sharing this. It was called 'illegal' because it was based on allegedly stolen sourcecode. (at least thats what the story was back then). But I dont think ID Software made a big deal out of this, since in the end it meant more sales for them. After that first port, the PPC boards were becoming popular and several people stepped in to develop ppc ports of Quake. The first one was called QuakePPC (AKA fastQuake).
Since it was still based on the stolen sourcecode, it was, by law (which?), still illegal, thats why it was removed from Aminet after a day or two. At least thats what was told around that time. I didnt know Clickboom had a say in this. Around that time many new ports appeared, most of them finding their way onto bulletin boards or shared by people on IRC.