Doesn't the Kinetic Fist just add to your Kinetic Blast damage, essentially making it a close attack?
1st level Elemental Ascetic:
1d6+1 (Kinetic Blast) PLUS 1d6 (Kinetic Fist) = 2d6+1, only usable as a close, unarmed strike.
As I understand them, infusions, such as Kinetic Fist "change the way kineticists use their kinetic blasts." So, when Kinetic Fist reads that it deals "additional" damage, why wouldn't it be in addition to the regular damage of Kinetic Blast?