We are very spoiled as fans because of the amount of championships we've won, especially in relatively recent history. Winning a championship is hard. There's like 15 coaches in the history of the sport to win more than 1. 6 of those guys have won more than 2, with Jim Calhoun being one of them. And a good chunk of those coaches were winning those rings 50+ years ago
That said, I think Hurley could win it again. He's shown to be elite at recruiting, roster building, gameplanning, and after a midseason hiccup he's shown to be great at adjusting. Those aren't things that will just go away in the near future, and college ball is changing so quickly that the coaches who change with it will be at a big advantage. Wouldn't be surprising if he did, but wouldn't be a knock on his career if he didn't.