The only reason it's the right move is because of the money. It's just like taking a job for 50% more money that you know you won't like. Some people want the money, and deal with the consequences, others care more about their quality of life. MD will get more money across the board for their athletic program and the university. But it will take years for them to be accepted as a B10 member, and I argue they will never feel home.
I put myself in a MD fan's shoes. I would hate this. Two schools out of 14 drivable on a Saturday morning, versus half of the teams for the ACC. Not to mention all of the athletes for all sports, cheerleaders, band members who will have to fly everywhere, if they are even allowed to go. The negatives and logistics of everything else doesn't matter in the face of money. If I was a fan, I would be putting on the brave face as well, but would know that it is all a facade.