You're a remarkably optimistic person.

A more cynical person would instead believe that clubs play some of their top players down whenever needed so their Tier 2 team can appear better than they are, their Tier 3 team can appear better than they are, and so on. If the core reason of separating players by skill level is to promote relatively fair competition for all, allowing anyone to choose to disregard it entirely by playing kids who are already significantly better is pretty much ignoring that imperative.