If the digital out essentially takes the player out of the equation, why is this reviewer so adament about not using the Oppo as a 2 channel CD player?

Quotes below taken from this review (an overall very favorable review of the player...)

"Audiophiles will not find the OPDV971H's digital outputs adequate for critical music listening...Audio for music is just not the Oppo's forte...For readers who listen critically to CDs I would suggest a separate, dedicated CD transport or player. "