Yes, smart contracts can be destroyed using the self-destruct feature.
Smart contracts provide a self-destruct feature that allows them to destroy a contract on the blockchain system. It is, however, a double-edged sword for developers. On the one hand, the self-destruct feature allows developers to remove smart contracts from Ethereum and transfer Ether in the event of an emergency, such as an attack. On the other hand, this feature can add to development complexity and provide an attack channel for attackers.
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