Oh it's a beautiful course. It's just not wide enough to ever pass on without a major advantage...say new soft tires vs hards with 50+ laps on them.
People have been ripping on Monaco forever, with good reason, but it stays (as it should, I believe) for reasons of tradition and prestige. In Valencia they've simply added another no passing zone just as bad as Monaco to the calendar.
As for KK's strategy, I can appreciate it for what it did for him and for the way it upset everyone, but it made the race terrible to watch, and combined with the stewards' late penalty assessment, allowed LH to get away scot free with passing the SC.