He knows they have nothing to do with dereferencing. He was contradicting the following completely false statement (which had nothing to do with dereferencing):
About the only place you'd need the ampersand version is if you're trying to get the current scope's @_ passed a la &somesub;. But that's really rare.

In reply to Re^4: Dereferencing code refs with & vs. ->() by ikegami
in thread Dereferencing code refs with & vs. ->() by doran

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