See Dyne, duping ruins all the fun of PSO. And you don't need a USB card to dupe on GC. And god forbid what can happen with Action Replay again.
As for Xbox, very very few people have modded Xboxes, and even less play PSO, and even less are interested in hacking it. It's a lot more work doing it on Xbox than it was on DC, and if things get bad, Microsoft can put a stop to it.
As for Egg Rappies, they were just added to Xbox PSO. First time I look, I found one. 3 of the other guys took a different route. I started fighting it, and then it sprinted off. It went right in front of one of the Forces who didn't bother hitting it
And in case you were wondering, I enjoy Xbox PSO much more, where I haven't seen any dupes, any hacked weapons, much more than GC PSO with mag cells galore. I'd much rather try to find them.