I think he is saying the flux of stock market money into the BCH fund is causing them to be very short. They will need to cover the BCH shortage either with actual crypto or enough options to cover the investors influx of cash.

This big of a move will likely cause the price to increase on the exchanges where the market is thin to start.

The tweet is showing the market is starting to see BCH as a way to digital spend crypto over btc due to fee and trx time supporting the theory that the influx into the fund is enthusiasm for BCH