The whole point of the "strong eat the weak" in other novels are really nothing but masks to cover the true point of the MC as "The One" "The Overpowered" and the "Plot Smasher".
Since theologies like the rule of the jungle for example do exist. But wish fulfilling novels and other cultivation novels doesn't really follow its true and fundamental meaning.
So to ask and answer this incoming argument has a really pretty and simple conclusion.
What kind of candy do you want or prefer?
Ans: We prefer anything that are fit to our taste buds.
Conclusion: We all have our distinctive tastes, only the selected few wants that full pie since we only want that cheery on top, not the pie itself.
That itself is a my logical answer.