Also, one of the problems with the NYA is that the creation of Bitcoin Cash - which is essentially a hardfork of Bitcoin that increases the block size and removes Segwit - left questions over whether some of the pro-hardfork side of the agreement actually intended to uphold it. In particular, it lead to speculation that they might just use the inevitable disruption to Bitcoin to encourage the adoption of the Bitcoin Cash fork, which they had backed and which was closer to what they wanted.