Yes many people agree this especially those who believe Bitcoin is only real and secure cryptocurrency. You are right that Bitcoin huge lead in hash rate which shows its security makes powerful case against Bitcoin Cash. These shitcoins are are just copies of Bitcoin without same level of trust and network support.
Market has always shown it prefers Bitcoin so it makes sense that any new copies would likely be sold off quickly as history has proven that just copying code is not enough to build same kind of security and trust as Bitcoin.