I was assuming the TV coverage was directed by someone else. That's how it usually works. Plus, I've seen his films, and can't imagine he was responsible for those borked shots and switching (live editing). He defintely has a better eye for composition.As a former commercial film director, I agree with only half of what you said. Danny Boyle is a film director as well.. NOT an TV studio control room director. which is what you implied he failed at.
The live show could've been a little tighter. (The kids-in-beds sequence, for instance.) But, the main problem was not the live show. It was the poor way it was captured and presented on the broadcast.What he did was create a wealth of visuals (total footage)....but no way to edit them live...or get rid of what should have been on the cutting room floor. As a one camera director, he overstepped his experience. That is what we saw.
If you are right, and Boyle was actually directing the video coverage, then he is to blame. Otherwise, I think it falls on the guy in the control room calling those shots and cuts. Horrible horrible horrible.