Anyone care to shed light on why ikegami's post received so many downvotes?

Is there a mistake in his overview of the return types of sigil'ed expressions, or in his general conception of Perl contexts and lists?
I'm asking because my own conception matches what he wrote, so if it's wrong I'd be interested in learning why.

In reply to Re^8: use feature 'postderef'; # Postfix Dereference Syntax is coming in 5.20 (why the downvotes?) by smls
in thread use feature 'postderef'; # Postfix Dereference Syntax is coming in 5.20 by Anonymous Monk

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