Janeway wasn't particularly inconsistent. In Caretaker, it was clearly established that she'd bend the rules to do the humane thing, and that's pretty consistently what she did. Seven of Nine was sometimes proud of being Borg and sometimes virulently antiBorg. She was sometimes harsh, domineering and arrogant and other times a timorous naïf hurt by the mean people around her. These really are inconsistencies, and they really could flip from one week to the next. Since this inconsistency is rarely (be honest, never!) held against the character, it's not true that Janeway was disliked for being inconsistent.