This episode was really interesting. Not only about the relationship/interactions between Seven and the Doctor but about the Doctor himself and it seems to me, the limits of his program. In the end, a man, even if he wasn't totally clean, was so upset to be wrongly accused of touching out and violating Seven of Nine, that he couldn't stand the pressure around him from his people and Voyager's crew led by the Doctor and decided to commit suicide.
This experience would have been an alert for Janeway to not let the Doctor expand his supposed knowledge in areas that require studies and experience. The Doctor is neither a psychologist or a psychiatrist (or even a Starfleet's ship capttain), even if .it was with good intentions (protect and defend Seven).
It is just me but I think that Janeway has been, once again too tolerant with him despite the fact that the Doctor's action killed a man.