Bitcoin's scaling debate finally seems to be shaking out, but some users aren't happy with the results.

After a few years of debate, it was perhaps to be expected that at least some were going to come away empty-handed. Controversial scaling proposal Segwit2x tried to remedy this by joining two code change ideas – the code optimization Segregated Witness (SegWit) and a block size increase.

SegWit is just a couple of steps away from activating on bitcoin, but some bitcoin users are unhappy about the outcome.

Others who originally backed the Segwit2x proposal appear to be losing confidence in an eventual block size increase and are now taking matters into their own hands by making their own version of bitcoin – and they're doing so on a short timeline.

Source:
https://www.coindesk.com/coindesk-explainer-bitcoin-cash-forking-blockchain/