Rather than engage in an argument on semantics let's look at the facts of the matter. The Bitcoin project has been the organization behind the official Bitcoin

Rather than engage in an argument on semantics let's look at the facts of the matter. The Bitcoin project has been the organization behind the official Bitcoin client since Satoshi was still around. If you were to start up an ancient Bitcoin client today it would follow the Bitcoin project's chain. The BCash chain would be considered invalid as it does not conform to the restrictions of a valid block according to the ancient Bitcoin client. The Bitcoin project chain would still be considered a valid chain. Contrary to most of the FUD around Segwit, the reason why it is considered a soft fork is because while it is a change in what constitutes a valid block, it does not violate any of the previous rules for a valid block.