Hey mr mister why have you repeated the same mistake as the legendary member above? seagwit you like much eh? there is no fundamental change as you put it but rather making it possible to do a hard fork without splitting the network in half in a soft fork skin in the future. BU is about one big mining farm wanting to do a hard fork so they can do the same work as before but including more transactions so they can get more fees, imagine their grandchildren could include 2GB of transaction data in a block a century from now when there is no mining reward other than fees, I guess they've thought about everything really and increasing hash power is not an easy job it requires millions of dollars and a very well built infrastructure and even if they do BU supporter has a huge mining farm planned to turn it on and start mining in near future.
What they want is to get more earn more money since 1 block averagely found every 10 minutes is not enough for them.

the current state of the network is exactly what a decentralized network should be and if someday you saw miners easily implemented and activated something in matter of a month or two you need to run for the hills because that would mean a central authority with control and absolute power over any changes in the system.