The Scripture Is False And The Biblical God Is Dead.

[Angrboda]

Blindsight patients can perform some tasks..if prompted by another person...and achieve results that are better than chance - but nowhere near the level of conscious vision.  Due to this, blindsight is actually a hell of an argument in favor of the evolutionary utility of conscious sight.  It doesn't really matter whether we could do some thing x without thing y, when we are demonstrably better at thing x with thing y.

You can swim without gills, too.  Should someone tell the fish?

You're going to need to show that consciousness actually does anything prior to claiming that it does things better.