No. Tracing its heritage to the Satoshi Genesis Block, Bitcoin Cash is the oldest cryptocurrency. A title it shares with Bitcoin Segwit.
Coinmarketcap, a hundred other coin websites, everybody sane and all of reality disagrees with you.
Coinmarketcap states that Bitcoin Cash is not the oldest cryptocurrency? News to me. How about a link to support your assertion?
Here you go: Bcash, opened for trading on major exchanges on July 24, 2017.
https://coinmarketcap.com/currencies/bitcoin-cash/[Your counterargument] "Yeah but it sat dormant not listed on major exchanges for years."
[My counterargument] "You just got schooled by a Newbie."