Bug inside media-views.js?

I have created a hook which adds two controls to the “Edit Gallery” page (a “select” and a “checkbox”). The “select” control is working absolutely fine, but the checkbox is not working at all.

It seems that the culprit is on line #3939 of media-views.js:

} else if ( $setting.is('input[type="checkbox"]') ) {
    $setting.attr( 'checked', !! value );
}

When the checkbox is selected value is “true” (string type). When the checkbox is not selected, value is “false” (string type). The double-bang does not work in the case of string encoded boolean values:

var stringTrue = 'true';
var stringFalse = 'false';
var boolTrue = true;
var boolFalse = false;

!!stringTrue // true
!!stringFalse // true (correct, but wrong!!)
!!boolTrue // true
!!boolFalse // false

This seems like a bug to me, am I right?

Cheers!