Liam R - WBC scoring rules .

15.2.2 The scoreless criteria are as follows:
15.1.2.1 The boxer violates any rule when using his Muay Thai fighting weapons.
15.1.2.2 Those Muay Thai fighting weapons attack the opponent’s am(s) or leg (s) as his self defense techniques.
15.1.2.3 The attack is light, without power from body weight behind it.
15.1.2.4 The boxer kicks his opponent on target, but his kicking leg is caught by his opponent to throw him down on the ring floor; the kicker scores a point. However, if the kicker with his kicking leg caught by opponent pretends to fall down on the ring floor, he is considered guilty of violation the rules. In this case, no boxer scores a point.
15.1.2.5 Throwing the opponent down on the ring floor without using any Muay Thai fighting weapons.

Please check 15.1.2.3 .

I would say this states that not all body kicks are assumed to have effect.

The rule 15.1.2.3 the attack is light,without power from body weight behind it is a SCORELESS technique i.e does not score , doers not presumed to have effect!