Just got back from Big Bear
330 on the way up was closed, and Highway 18 was open with R3 restrictions in place.
Caltrans was checking all cars at the bottom, and as another person pointed out in this thread , they didn't care about "snowflake" tires, you had to have chains or be turned out. I had a spare set of chains to put on, and they easily let to drive through.
Definitely agree about bunch of people who have no idea what they're doing. Lots and lots of cars stuck, or spun around in the ditch. Accords, Camrys, Subarus, a few F150 stuck here and there.
No matter what kind of car or tires you have, experience and common sense counts more than anything. Unfortunately there are folks who drive out there and lack both.