There are some inferential mathematical studies of the success rates of certain 'social influencer' breakers at finding significant insert cards that conclude that the likelihood of them actually finding the cards they found at random is practically zero, the suggestion being that they are fed loaded cases as a marketing scheme.
https://forums.collectors.com/discus...pulling-a-scam
I have no personal experience or information on this; frankly, I don't care. But it is interesting to consider just how rigged the casino is, and how we as collectors are asking questions that I never, ever thought I would consider when I started collecting Topps cards in the last Ice Age. Used to pick up a pack every morning on my way to school in Bedrock.