Bitcoin Cash added new utility that SegWit lacked: 8 MB blocks, higher capacity, lower on-chain fees. That new utility is new value for Bitcoin holders.
Another fork will add ZKP privacy, new utility and new value.
Sure thing. BCH scales as Bitcoin was supposed to. It is supported by the original Bitcoin developers. It's electronic cash, directly peer to peer, not hub and spoke like Lightning. Bitcoin is now BCH.
Bitcoin Cash is closer to the original Bitcoin implementation in code, philosophy, and community. Same thing that worked since 2009, until the blocks ran out of space.