An HUD would need to know what to measure in order to prove it is rigged or not. Right now all the normal measurements are passing, i e. frequencies of draws hitting over the long run, frequencies of cards, frequencies of someone being dealt AA, KK, etc., frequencies of winning with a particular hand over the long term, all of these are NORMAL.
If you stop looking at these measurements and program your HUD to look at who wins 2-3 hands after somebody else wins, then you can start figuring out how it is rigged. Many users of this forum already know this and apply this. Just a matter of time before it comes out in the wash.