a counsel of perfection
Instructions or advice given for one to attain an ideal but unfeasible or unrealizable standard. But in the current market, those enter the workforce are coming up against a counsel of perfection, demanding that they have not only a college degree or two, but also several years' experience and a huge list of professional references if they hope to find any job that pays more than minimum wage.
a counsel of perfection
advice that is ideal but not feasible. 1986 E. Hall in Home Owner Manual Twice yearly desludging has been recommended but this is probably a counsel of perfection.