Blue Bloods fans have noticed inconsistencies in the portrayal of Erin Reagan's ex-husband, Jack Boyle. Despite the Reagan family's negative perception of him, his actions don't always align with his reputation. Fans are frustrated with the character's inconsistencies, ranging from his behavior to his relationship with Erin. Some fans have called for more character development for Jack. Actor Peter Hermann's busy schedule with other shows, like Younger and Law & Order: SVU, limits his availability for Blue Bloods. However, Jack has appeared on the show recently and will likely continue to do so.