Regrettably what Adrian has said is on the mark. Such a shame that conditioning and perceptions of it have become so essential, or viewed as essential.
Mind you, there are times when the conditioning at Minch Old is pretty good, especially through the winter, spring and early summer, when the greens can actually be rather pleasant to putt on.
It would be wonderful for somewhere like Minch Old and other courses on Common land of a not-dissimilar ilk, the Westward Ho!'s etc of this world, to be given the opportunity, the cash, and very crucially the support of the authority who oversees the Common to raise the courses conditioning levels. Although that may take away some of the uniqueness, charm and special aura of such courses.
Let's face it, once-upon-a-time the venerable TOC (and many other now highly thought of courses) used to be grazed by sheep and had no irrigation. Now with the cash and the support of the authority that oversees the links, TOC's conditioning is top-notch.
atb
Later edit - some colourised photos of Minch' Old in days gone by -