2) "jazzing up" hands would take an even more monumental effort than "running the largest bitcoin poker site." The theory about "poker is rigged" can be attributed to the human brain not quite grasping large-scale independent probabilities.
Totally not a rigtard here, but I'd like to see a fair PLO being spread so I could play it. I just don't play that game with nicks I don't recognize, and I usually don't. Not sure how to deal with the collusion issue other than avoiding it.
Personally I would advise you to play heads up. There are numerous occasion when there was talk about collusion on the highest games on the internet on PokerStars and almost every major site.
On Stars and the other sites you have to be doxxed and they have very complex systems to check against collusion.
Some forms of collusion just aren't detectable.
For example sharing of huge amounts of action between players (especially dangerous if they are playing short handed).
We just have to deal with this issue because playing anonymous is necessary for the development of online poker.
HUD's/databases have destroyed the beautiful old school days of online poker.