Technically it is true but most of the people have no idea about how bitcoin works technically, just like no one understand how Federal Reserve works, so they still regard the new dollar issued by Fed today as the old dollar 15 years ago

You don't pursuade people to give up on dollar simply because today's dollar are different than old dollar, you present them cryptocurrency, since that is a much advanced form of money. Similarly you must show people why bitcoin sv is more advanced than segwit bitcoin