From a basketball strategy standpoint that statement above is not accurate. Purdue and Wisconsin play very different defensive systems and have for years. Purdue presses and extends their defense well past the 3-point line and definitely uses their "hands" as you call it. Purdue has had great athletes and individual defenders of the past that were great at stripping and getting steals. Wisconsin on the other hand almost never presses and rarely extends their defense more than a foot or two past the 3-point line. They play more of a "pack line" position defense which is completely opposite of Purdue/Indiana that are pressure teams/steal focused teams. Wisconsin relies on getting charge calls as you definitely see their guys baiting the refs with flops (never seen a team take more charges) but they rarely reach and grab because they aren't going for steals (Wisconsin is typically at the bottom half of steals each season).
One point you do make that is accurate is that Wisconsin doesn't have the athletes that MSU/Indiana/Purdue has which is why they play "pack line" position defense and Wisconsin typically doesn't gamble on steals or reaching because that would take their body out of position and their athletes lack the recovery speed to make up for getting out of position if they don't get the strip and that leaves their entire help defense vulnerable. They don't play zone but they play so much help defense that it almost acts as a zone.
The block/charge rule will definitely impact Wisconsin but the other rule might impact Wisconsin the least of any team in the conference so it's a very bimodal +/- situation for the Badgers. Negative because it negates the 3-4 charge calls they get a game and positive on the other aspect because Wisconsin doesn't reach on the perimeter historically anyway.
Purdue will suffer the most in conference due to the rule changes but Indiana might take a big hit too.
Oladipo made a defensive reputation at using an arm bar and having his hands all over. Craft already plays sound fundamental defense, he'll have to clean some things up but he already understands positioning, communication and anticipation which are the building blocks of good defense
Yes I'm a former coach and also apparently a basketball dork