He's basically claiming that if the blocks ever fill up, then Bitcoin has failed.
I have always suspected this guy is a clueless zombie. Quite the opposite, filled up blocks is not a failure but success! Economy is always about supply and demand. Success of a product or service you are offering is measured by how much demand is surpassing supply.
We're still at less than 50% of the ATH that occurred over TWO YEARS AGO and you call that success? The only money that's going into transaction fees is the money that's coming out of BTC market cap. You're effectively getting a negative return on the blockspace you're selling. Maybe you were sick the day they taught economics in Economics 101.
Scenario I: (25BTCblockreward+0.2BTCxactionfees)X($1100/BTC)=$27720
Scenario II: (25BTC+6BTCxactionfees)X($450/BTC)=$13950
Success my ass. You're either being stupid or dishonest.