Young Sheldon isn’t actually a prequel is why.

The one fan theory I think kind of redeems the show is that, based on the background math from the original, Sheldon is working on the physics behind creating an artificial black hole. The theory goes the research succeeds, rips apart that reality, and eventually the alternate universe is born as Young Sheldon doing almost the same things but butterfly effect yadda yadda

The best part of the theory is when they get spaghettified by their own research