I disagree that this is a good analogy, because you're referring to a financial barrier to entry and the GP is talking about effort, not money.
Of the genres you mention, only punk could reasonably be considered a low barrier to entry genre in that some of the biggest punk bands were famous for hardly being able to play their instruments. But it's also the single genre missing from your "Today," paragraph, indicating that yes, indeed, making good hip hop or electronica is hard even with a fantastic computer with fantastic software.
Of the genres you mention, only punk could reasonably be considered a low barrier to entry genre in that some of the biggest punk bands were famous for hardly being able to play their instruments. But it's also the single genre missing from your "Today," paragraph, indicating that yes, indeed, making good hip hop or electronica is hard even with a fantastic computer with fantastic software.