Agree with the above. The word is definitely out. Went to San Josef Bay and a bit beyond in summer of 2003 and barely anyone around. Did the full Cape Scott Trail in 2018 and yes, expect lots of people. That said, the beaches are generally pretty big and we never felt overly crowded. In fact, for two nights we had a secluded little nook all to ourselves. We never had to share fire pits or anything like that. Don't be a fool and camp below tide line, as we saw some people do.... They got wet in the middle of the night.
Mt. St. Patrick is a worthwhile side adventure. Unlikely you'll see many people up there.