When a man says he wishes he "was stronger(more of a man)" and "I guess I've chosen to accept my fate", he is losing respect for himself. Nothing could be more obvious.
This is exactly why most experts recommend going dark after a period of showing your spouse your willingness to make positive changes, to protect your love for your partner.
Believe me, I know, when you push your ability to tolerate a situation to and beyond your limits, it costs you self-respect. Sooner or later that will turn to resentment. That resentment will get turned on the partner for reasons of self-preservation and you will begin, unconsciously, to kill your love for that partner.
I don't know where Sinclair's limits are, only he knows. But to ignore the consequences of pushing beyond them and the obvious signs that he is very, very close to doing that already is irresponsible imo.