subtraction of an exsisting protien yeilding "closed" not too impressive (hardly address gain of information on demostrates a loss of information), far more impressive would have been to show beetles eyes could gain this protein and become "open"
From the article.
In contrast, the introduction of spacemaker into eyes with a closed system transformed them into an open one.
Before you go on about a gain of information being necessary for evolution to occur as I know you really want to, you need to define information as it applies to evolution, derive a method of measuring that information and then show that additional information rather than a loss or a simple change in information is necessary.