The writer wants to believe his genius is arriving, pristine, unmediated, to his readers all over the world.
Readers, wherever they are from, want to feel that they are in direct, unmediated contact with greatness.
mediate me·di·ate (mē'dē-āt')
v. me·di·at·ed, me·di·at·ing, me·di·ates
To effect or convey as an intermediate agent or mechanism. adj. (-ĭt)
Being in a middle position.