Oh god, yes. It's an overlooked culprit (though far from the only culprit, obviously) in web performance and resource use being clown-shoes. We used to be aware

Oh god, yes. It's an overlooked culprit (though far from the only culprit, obviously) in web performance and resource use being clown-shoes. We used to be aware that using some CSS features had a serious resource cost on the client side and keep things halfway sane, but it never comes up anymore, while we've added even more ways to eat resources with it.