Stratum V2 decentralizes pool’s power to miners, makes the network much more censorship resistant. It does so by allowing miners to create block templates instead of centralized block template creation by pool admin. 

 Ok but in English, how does this actually help with decentralization? EILI5, like I'm your young child who wants to know how this works 

 It allows for the home miner to easily run a mining node.
For now at least. 

 https://braiins.com/stratum-v2

Helped a lot