He should at least support dynamic pricing as an ADDITIONAL offering to supplement a capacity-controlled award chart.
Delta already had dynamic pricing as an additional offering to supplement the since-masked capacity-controlled award charts. "Pay with miles" type options are that.
Why should he support Delta providing that "pay with miles" path when it provides on average a return less than the value of cash-back card programs and other alternatives? Because of DL credit card kickbacks? I am glad he doesn't support DL's consumer-unfriendly SkyMiles shenanigans despite the credit card referral fees.