The basic problem is that the writers are not smart, let alone geniuses, so they simply do not know enough to write a show about geniuses.
Most of the viewers are not smart, let alone geniuses either.
Oh, he's sorry alright. Sorry he got caught.
Remorse is possible for a bad decision made in the heat of the moment. This man, on the other hand, was deliberate and meticulous in his abuse of several people that lasted over a *decade*. These are not the actions of someone who made a mistake, these are the actions of a sociopath.