Sort of it.

The ruling clearly applies to all air carriers. In theory.

In order to apply in practice one of these things has to happen...

1. Other carriers voluntarily comply.
2. Their crew file a complaint, triggering enforcement.
3. CA Labor Dept. attempts to enforce it.

Doubt that #1 will happen at this point, they're either taking a wait-and-see, or there's some behind-the-scenes lobbying to get this fixed.

#2 will happen eventually, if for no other reason than it's an obvious outlet for some disgruntled troll.

#3 does not appear to be happening... CA may recognize this as an unintended consequence of a poorly-worded law, and they may be working to fix the issue too. I have not seen any statements from the CA gov to the effect that they think this ruling is correct and will be enforced. I haven't delved into the court proceedings, not sure of anything was said there. The state may have wanted the lawsuit to succeed, in order to affirm the broad applicability of their law while not actually believing or intending that it should apply to crew... in that case the CA DOL will be working with legislative staff to get it fixed.