Yes, I see those disclosures regularly even though I don't live in California.
Off the top of my head I also have California to thank for leading the way on:
- Puppy mill bans
- Clean, smoke-free air at work and in bars & restaurants
- Tanning booth restrictions for minors
- Single-use plastic bag bans
- Gay conversion therapy bans
California was also the first state to label Roundup as a known carcinogen. Years before the landmark cancer judgment against Monsanto. So it seems Cal/EPA knows what they're talking about and is providing valuable information not just to their constituents but to the rest of the country as well.