That’s because California (like the majority of other states) assigns all of their EC votes to the winner of the popular vote within state. Only Nebraska and Maine split their delegates right now.
The popular vote compact is not in effect yet. They don’t have the 270 votes needed to do it. The last sentence of the first paragraph in the Wikipedia article you linked to says so.
They gave up on that plan. Defining Plank’s constant happened first. It could still be done as a secondary confirmation, but it’s less of a race now to get away from K