I was alarmed to discover the same a few times -- the contract had wide claims on IP, and then there was a separate part which said "of course, these are the enforceable limits according to this particular California law."

It seemed like they were pulling a fast one, but basically they were compartmentalizing so they could claim the maximum rights should the law be struck down or repealed (or the business moved outside California, I guess).

Both Bay Area companies I've worked for include California 2870-2872 with their new employment packs, right behind the NDA.

That's OK, the law takes priority anyways.