It's worth observing that some of the things he points at are new-ish in terms of stable support. :has() for example, is a gamechanger once you can confidently

It's worth observing that some of the things he points at are new-ish in terms of stable support. :has() for example, is a gamechanger once you can confidently not care about IE11. Before :is(), :has(), :where(), and before the forgiving selectors were added, things were not so much fun.