I'm pretty sure this will mean nothing so new to anyone, but I noticed some similarities in Rick's speech at the end of Season 2, when he established his authority over his group ("But get one thing straight...this isn't a democracy anymore") and the final point of his abdication to Negan's authority ("Let me put this to all of you as clearly as I can: I'm not in charge anymore").
I tried to draw the decline of his position of strenght in this video, including a couple of other speeches he made during the 5th and 6th season:
I hope this can be someway interesting, cheers!