I agree with this, despite that as a web developer I have written most interfaces in my life in CSS.
I did, however, have brief exposure to various native toolkits in Java and would love to see a proper constrained-based scene graph in the browser.
Im workong on having a plugin built that will give us the flexibility of constraint-based control in CSS but in a way that makes more sense to the CSS way of doing things.
CSS is good for styling but not for layouts.