The quote by
@boomer_btc is on point - a chain split is worse than not having bip110. Once you realize every miner and every economic node had to individually make that assessment, you see what the game theoretic conclusion is - there is no overwhelming _need_ for bip110 and the risk outweighs any upside. That is why it failed. Not collusion. Not the deep state. Not any of the lies some people are trying to sell you.