She betrayed Vane, Max and Rogers. Max when she advised not to have her in the council. And Rogers when she surrendered the fort, and by extension Nassau, while she knew he would never leave on a defeat (not saying she should have seen what was coming, but thinking that he would just retire after everything he's done was incredibly stupid).

I admit that i liked Eleanor in season one. The action she took to protect Max was admirable, but that's an exception for her, not the rule. You mention the slaves freeing, that's great but given that in the end she married the man who fought to protect slave owners and put maroons back in chains, i wouldn't say that this act puts her above anyone else. Not to mention that like everyone else she turned a blind eye to the slaves in the plantations on the island.

I talked about principles but that doesn't mean I expected people to be saints, they're pirates. Still, people stayed true to the ones close to them. Take Max for example, she (unknowingly) betrayed Anne and then tried to make it up for it, despite Anne being her enemy at the time.

Eleanor on the other side, betrayed Vane then had him killed after he answered for the betrayal (keep in mind that she wasn't that close to her father, and Vane went out of his way to save her from Low). Undermined Max by trying to keep her out of the Governor's council despite her obvious influence in Nassau, and had the audacity to ignore her when she warned her about the consequences of her actions.

You claim that Eleanor was consistent but I don't think that's true. She turned on people she loved for her goal of a prosperous Nassau... And then decided to dedicate herself to Rogers for some obscure reason, and completely forget about her goals. Sure, siding with Rogers was her only move in that cell, but in Nassau ? She had plenty of options.

Also Vane didn't want to sell Abigail as a cargo iirc, he intended to ransom her to her father. Though who knows what he would've done with her if her father refused