Length Obviously Not An Issue On The Longest Course

Golf World's Tim Rosaforte cautions readers not to panic after the first round's low scoring, and includes this beauty:

With rain in the forecast, the greens already soft, and length obviously not an issue, Medinah No. 3, the longest course in major championship history, is in danger of three more days like this.

Length is not an issue on a 7,500 yard course that is the longest ever played in a major?