So the gate it's probaly other world that full of science and magician association is evil goverment that don't want people without magic gain the power even thought they just want peaceful life.
And from this chapter, the magic association is bullshit because they revoke old age MC strongest title just because his full potential in red magic pretty avarage. The problem is if Mc potential is avarage, other mage is probaly more small.
Magic association should just prove that MC strongest title need to revoke by battle, not just by potential status.