16.x Hiding Header on certain pages

Our QAs have noted that the header, specifically this CSS for Peak 16.8 + 

@media screen and (max-width: 767px)
.PostPage .lia-quilt-row-header .lia-component-quilt-header .lia-quilt-row, .ReplyPage .lia-quilt-row-header .lia-component-quilt-header .lia-quilt-row, .EditPage .lia-quilt-row-header .lia-component-quilt-header .lia-quilt-row {
display: none;
}

This CSS is hiding the header quilt on certain pages.. so the sites Logo and master nav is just gone.. 

What's the reason for the decision to hide this element?