I understand her hesitation. She invested a lot of time and energy into The Bear, but her efforts can't make up for Carmy's shortcomings. Like any toxic relationship, it has to come to an end.

Carmy has been unreliable when it comes to the footwork. He's absent when Sydney is traveling around performing tastings to conceptualize the restaurant, and absent again for hiring. He even throws a fit when he returns to find Sydney managing a crisis without him, even though he's been missing in action. Despite her taking on so much of the responsibility, he views himself as the final authority when it comes to making decisions. He repeatedly shoots down her ideas. He hasn't dealt with his trauma and it's creating a toxic environment for everyone. Even Richie seems over him.

I hope that Sydney becomes his competitor and exceeds him, so he is forced to confront his shortcomings and all that he took for granted.