one thing has nothing to do with the other. segwit won't stop miner centralization. I don't know why some people think it will.
but don't worry, its not a 'handful of Chinese guys'... look at antpool, there's almost 100k workers in it. and that's just one pool.
Seriously? It doesn't matter how many "workers" are in a pool, most pools are controlled by 1 dude and Antpool is controlled by Jihan Wu (1 dude).
I'm glad you think miner centralization is a problem, now you can stop shilling for BU and find another solution or what you say is meaningless.