The doubling in MG
VP is categorically not rigged.
When you click Double, the server chooses a card for the dealer and then chooses a card for the player. The higher card wins and it is all generated using the RNG and a truly random 50/50 shot as you would expect.
The game is deceptive in that it suggests that the user is actually choosing one of four cards to be compared against the dealer's. In fact whichever card he clicks on will be displayed as the already chosen player card, and the other three are never used.
This does not in any way alter the odds of winning, and in fact it makes the MG double feature quicker than that on other casinos which have to contact the server twice - once to get the dealer card, then again to see which card you selected. It is a lie in a way, but not one that actually matters except perhaps psychologically - in the same way that some people think it matters which spot you sit at at a blackjack table, or think it matters if other
BJ players make dumb decisions.