The notion of emptiness is certainly misused when the adept is taught that emptiness only consists in the abstract removal of conditioned things such as concepts. The problem with understanding emptiness in this specific way is that it all but ignores unconditioned reality from which conditioned things arise so as to appear real.
Using emptiness this way eventually leads to the belief that nothing is real or the same, emptiness is the negation of all (sarvâbhâvat); even nirvana is included. This becomes nihilism.
This procedure completely ignores the need of an introspective penetration into the very unconditioned substance of conditioned phenomena. In truth, the notion of emptiness should lead us to the unconditioned, for example, the Buddha-nature which is not empty of the unconditioned.
Turning to the Five Aggregates (pañca-skandha), emptiness also informs us of what the aggregates lack. They are the very emptiness of the unconditioned which is also to say, they are the privation (shunya) of true nature (sabhâva/sasvabhâva). By directly realizing the unconditioned it is neither absurd nor confusing for us to say the Five Aggregates are emptiness, that is, the emptiness of the unconditioned. Confusion arises for those who harbor a wrong view of emptiness; who don’t understand how it is to be properly used; who in particular, lack gnosis of the unconditioned.