It all depends on the journalist who asks questions.
Yeah, exactly. Boring journalist = boring questions = boring answers. It's not just Mark's fault.
The problem is that he doesn't really have a following among journalists, journalists who care deeply about his stuff and analyze it. They just cover him because he's a big figure and popular, but they only scratch the surface. Media darlings like Damon Albarn or Bob Dylan (if he cares to give an interview every decade or so) will get much more interesting questions.