I get the impression that to the rangers, a "constructed campsite" consists of a rock ring, a rock wind-break, and/or logs moved into a user-friendly position for seating. Having seen hundreds of those "constructed campsites," I have never been offended by them, but was often happy to use them.
I agree with you that rangers and trail-crews have more important things to do than kick over rock rings and move logs around so that it gives the (false) impression of a pristine area.
Sec. 2. (a) In order to assure that an increasing population, accompanied by expanding settlement and growing mechanization,
does not occupy and modify all areas within the United States and its possessions, leaving no lands designated for preservation and protection
in their natural condition,
it is hereby declared to be the policy of the Congress to secure for the American people of present and future generations the benefits of an enduring resource of wilderness.
these shall be administered for the use and enjoyment of the American people in such manner as will leave them
unimpaired for future use as wilderness, and so as to provide for the protection of these areas,
the preservation of their wilderness character,.....
....which is protected and managed so as to preserve its
natural conditions and which (1) generally
appears to have been affected primarily by the forces of nature, with
the imprint of man's work substantially unnoticeable.....
The word "Pristine" does not appear in the Wilderness Act. Thank God. If instead of what it DOES say:
"appears to have been affected primarily by the forces of nature"
It used the word Pristine, which means:
"1.In its original condition; unspoiled.
2.Clean and fresh as if new; spotless."
My interpretation would be that there would be NO permits issued, or so few as to count on one hand, and the education and enforcement would be onerous.