Isn't his just moving the goal post? Now the subjectivity is choosing what metrics to measure. Are 10 easy clicks worse than 2 hard clicks? Is a long, easy exp

Isn't his just moving the goal post? Now the subjectivity is choosing what metrics to measure. Are 10 easy clicks worse than 2 hard clicks? Is a long, easy experience better than a short stressful one? And so on. Couldn't that vary by each person's preferences?