Hold your Bitcoin Cash. Selling could be the worst mistake of your life.
The guy is right, Bitcoin Cash fees will stay the same, because nobody will use Bitcoin Cash, no demand -> no fees.
Would like to see some stress tests on that network to see how it behaves.
Or ask BitcoinCash developer or supporters how BitcoinCash prepare to handle lots of transaction without use SegWit, LN or similar solution. Even New SigHash Type and 8MB is only temporary solution and as far as i know they don't have long-term plan.
Segwit does just about nothing for scaling and BitcoinCash already has 8mb blocks with plans to keep scaling on chain. Bitcoin Cash will also receive L2 before BitcoinSegwit. Sounds like you didn't think your post through.