You wanna know why I know the OP is trolling/an idiot?
It took us 6 years to hit a blockchain 30 GB in size.
Now OP is making claims that the blockchain will suddenly grow more than 30GB every two weeks if the 20m cap is implemented. (2.8GB/day).
I don't even wanna......
You can fit all 6 years of transactions on a $50 1TB hard drive, over thirty times lol... Nothing to worry about.