This makes sense, but it doesn't really line up with the facts. Check their last couple tournament losses - it's been because of poor offense.
It does and it doesn't. Cuse has, in the past, created a decent number of turnovers and run outs from their zone and failing that implemented a press to create turnovers early in the season. These methods create easy offense but don't work as well in the tournament because usually teams are better prepared to combat the zone and have better players to get past the press. Maybe not every year, but it does account for some of their post season offensive issues. It's a huge reason they do so well during the regular season and often fail in the postseason.
That said, I fully believe the new rules should help Cuse immensely. 30 seconds against their zone is going to be tough. It was hard enough when given 35 seconds, but losing those 5 seconds is going to make it even tougher. Secondly, there is a better chance they have teams who play man in foul trouble earlier (while staying out of foul trouble themselves) due to the new hand check rules.
I understand why teams play man to man, but I wouldn't be surprised if a number of teams start to shift to zone defenses after (or during) this season, as it becomes more apparent the rules are geared toward helping teams that play a zone. When that happens, I expect scoring to drop back down and some kind of defensive paint rule to be implemented. It's actually kind of absurd there isn't one already when you think about the rules they put into place this year.
Maybe I'll be wrong, but that's the way I see things going after watching teams struggle to play man to man under the new rules.