I'm all for CSS getting more powerful but there's an interesting flip side: the increased expressiveness may make it more difficult to reason about.
Even an advanced use of grid is tricky to understand. Now combine this with the new parent selector, container queries, layers, and many other new goodies. There's a lot of (new) cognitive demand placed on already burdened developers.
I think this is one of the reasons why a lot of these features have very little or slow adaption. Even something essential as grid, usable for years now, is rarely spotted in the wild.
Even an advanced use of grid is tricky to understand. Now combine this with the new parent selector, container queries, layers, and many other new goodies. There's a lot of (new) cognitive demand placed on already burdened developers.
I think this is one of the reasons why a lot of these features have very little or slow adaption. Even something essential as grid, usable for years now, is rarely spotted in the wild.