ecarfan- Thanks for sharing that link - Elon looked astonished that it worked! I guess he wasn't convinced that is was going to work before it did.
As he said in the post launch press conference, every time he watches a rocket launch he thinks about the thousand things that can go wrong and how any one of them will cause a launch failure. In this case he was watching a new rocket design launch for the first time. He knew that there was a significant probability of failure. I think he was genuinely surprised that everything worked correctly
Sure, the center core recovery failed. At this point SpaceX has not provided much detail as to why it failed. But I’m sure it is a solvable problem.
The FH launch with side boosters landed and Roadster payload sent into a fair approximation of the orbit that Elon wanted to happen was a massive success, and only a tiny fraction of all the people who are aware of the launch even realize that the center core hit the ocean at about 300mph. Most of the media reports I have seen didn’t even mention it.