I mean, kids transfer schools every year. It's one of the reasons I care less and less for college sports....these aren't our kids. They're this year's kids, and for the other 2-3 years of their college career, they're somebody else's kids.
It's odd to get bent out of shape if coaches change jobs too.
Coaching is one of the few jobs where anybody would even suggest you stay put even when a better job for more money tries to hire you. Staying put could be defended for relational and loyalty reasons in the old days. Unfortunately, we're well past that, and singling out Wade/LSU is just silly.
I'm obviously not saying I like it, but acting like their character is lesser than everybody else out there is wrongheaded. They're just functioning in the context of what college sports are now, and they're not the only ones.