I'm not quite sure why Daniels is being labeled "low mileage". I'm fairly certain that what Daniels is looking for athletes to avoid is garbage miles. I've known plenty of guys who brag about high mileage but so many of those are doing nothing in terms of getting you to race faster. I know that Daniels has said not to load on junk mileage, and for many that has been interpreted to mean low mileage. If a guy can effectively handle 100 mile weeks, while including all his prescribed intensities, I've never heard Dr. Daniels discourage that. I think he was trying to let people recognize that "100 miles" is not a magic number.
So I guess that kind of reflects what Kim Stev was saying up above about Lydiard. That without the whole program, volume means nothing. And I'll tell you this; if you don't systematically build your mileage up on a yearly basis using a Daniels system, YOU WILL NOT IMPROVE! But Daniels has, in my experience, been crucial in developing HS athletes.