Moron question: IPv6 - in a nutshell would it simply take all the eggs out of one basket and put them into a bazillion little baskets?

Is one of the fundamental issues with IPv6 distributed security? And also, if you had a (theoretical) 100% IPv6 "LAN" then would you theoretically just have scattered your eggs into many difficult to secure baskets?

I'm working with IoT drivers and firmware and I'm trying to create little home automation tools while I'm stuck at home and I'm wondering what the world of networking would be if someone managed to get their entire environment IPv6-atized in terms of security.