Why does the lichess engine consider the King's Indian an inaccuracy?

Its because of very simple reason that you never play g6 on move 2. after you played nf6, you play d6 insted. g6 on move 2 is not a kings indian

Maybe King's Indian is objectively(engine) bad but in practical games against humans, it works. P.S. I play the King's Indian.

@pi_31415, Yeah, I am pretty sure that that is right. Thanks!