Unfortunately setwit2x and the bitcoin cash fork (and the brief extension block proposal by was it bitpay?) also ended the BU EC+segwit compromise effort which was ongoing at that time. Its a classic case of divide and conquer.
Its interesting that the miner that first welched out on segwit2x IIRC was f2pool because they were the miner that really stopped the BWhen I heard about S2X my first thought was that it would fail due to the separate segwit & large block activation times. This is why I never pushed BU to endorse it (but at the same time did not reject it). Given the terrible state of segwit support in wallets (including bitcoin core's own GUI) its pretty clear that the core strategy is to use segwit to enable offchain technologies, not to use it to directly relieve onchain capacity.U effort from moving beyond 45% last summer. If I remember correctly, they also have huge amounts of altcoin mining hardware...