Segwit was not "accepted by bitcoiners", it was accepted by some bitcoiners (again my point, total consensus is impossible), others didn't accept it, which resulted in BCash being created, but this was a soft fork. If a way to get segwit via soft-fork was never found, it would have either never happened, or we would have Bitcoin and Bitcoin-segwit in a separate chain (which some would claim to be Bitcoin), and so on.
There's an abundance of evidence to suggest that Bitcoin Cash was a small minority of original Bitcoiners, not least the way the exchange rate of BCH has dived and dived. 95% acceptance or thereabouts is the best that could be expected realistically, and that's about what happened. Saying "100 people out of several 100,000's didn't agree" is not much of an argument.
It's difficult to measure these things, "100 people out of several 100,000's didn't agree" is not much of an argument, but what im sure is, if segwit wasn't done as a soft fork, and it activated, there would be people mining the original chain, and we would have a 2-coin situation.
Also, it's not so much the amount of people, but the skin in the game, namely, people owning a ton of coins ready to dump their share on your chain, crashing the price, and thus forcing miners to mine back on the legacy chain.