The line between "Firm and fast" and "Hard and parched" is indeed a thin one, IMO.
"Parched" certainly implies dusty, cracks in the ground, and dead (not dormant) grass, or worse: weeds.
So the first part of the statement I agree with, that being hard and parched fairways spoil a good round of golf, although "spoil" is a strong word that does not convey my exact feelings. A better word would be "detracts".
However, "allowing a prodigious run upon the drive" is a result of firm and fast, and I DO enjoy that part of firm conditions. Just not a result of parched fairways.