Does the profiles thing feel like a really really bad idea to anyone else? Taking CSS and splitting it into parts that can be in the stylesheet and parts that

Does the profiles thing feel like a really really bad idea to anyone else? Taking CSS and splitting it into parts that can be in the stylesheet and parts that can't seems like it's only going to cause confusion, and won't really help anything. The major reason you'd want something like :has is because you want to style a parent in CSS only. Without that being in the "dynamic profile" it leaves it to JS only, which (if i'm reading things correctly) would be able to do the same thing by doing a lookup on the parent, then doing a lookup in that node for the child which would be faster than how current CSS engines would find that node if they had to start making multiple passes.