Will it degrade the thinking skills of all of our multiverse versions?
Perhaps - but I guess there will always be a smart version too :)
Cliff notes: Multiverse are essentially parallel universes created from every decision position, one goes left, the other goes right. I don't believe there is any way it works this way, as it would need a different position for every molecule, not just decision criteria.
So nothing new there. Infinite and beautiful. We can go any direction we choose, at any time. Pretty cool really. Let's all take that walk on the road less traveled and see where we go.
Nothing new. Which is why I don't think it is such an original concept! :D