As a non-resident, I love this. I really wish we would do the same thing for rivers here in Utah (we've gone back and forth on that).
I visit California every couple years and it's one of my favorite vacation spots. My favorite beaches are the small ones with tiny walkways between residential homes. You feel like you're trespassing, but you're not.
I've also made use of dozens of parks in CA as my son was a professional BMX rider for a time and we went on a tour of as many CA skate parks as he could ride. It was a good time and we were allowed access to every park we visited.
Sure, but the ACLU has lots of options to open them up in other states that do allow that. Even Nevada for example doesn’t have the concept of “public easement” that CA does. You cannot get out of your canoe and walk on the beach on the Nevada side of Lake Tahoe that is private.
