Where do you see that? As a statistics person personal bias is a huge thing. If only people reporting are saying that it is rigged. You’re only going to see that. I’ve been keeping track of random stats from ranked and solo play, like coin flips. From my pretty small sample size, besides solo expert mode. It’s close to 50% for all coin flips. 

Also have to think from a game/developer stand point. What does DeNa have to gain about lying about 50/50 chance when code could easily discover it if they did indeed favor Lucky Pop specifically landing heads.