I stopped watching after Rick's farewell and just started catching up last week (it is a much less frustrating show to semi-binge than watch one episode a week). Devoting entire episodes to the villain's perspective (whether the Governor, Negan or Alpha) is such a staple of the show and still so very very annoying. That said, and this may be an unpopular opinion but these latest seasons have been a big improvement over Gimple's Saviors arc. That shit was Bugs Bunny level stupid and there were no dialogue scenes with our protagonists (just monologues and grunting) for like two years - blech.
Put me on team-Lydia. She didn't kill Henry. She didn't even choose to do anything that led to his death. Her mother killed Henry and the only other people responsible for his death are Henry himself and Darryl. Henry refused to accept her sacrifice for the community at Hilltop and Darryl is the person who thought it would be a bright idea to put a hormonal teenage boy in the cell next to an attractive damsel-in-distress to get intel. The bond the kids formed is on him, not Lydia. (Lydia even went to the authorities immediately after her mom let her go and warned them there was a psycho inside the Kingdom.)
As for the ASZhats' treatment of Lydia, that's some serious bullshit and is on the bullies themselves, on the schoolteacher who didn't stop it (Aaron), the parent who didn't protect her (Darryl), and the administration who enabled them (Gabriel and the others).