Ubisoft don't care about "betraying" players narratively. Destroying their agency. Even mocking them through the game. They do that in multiple games and then ignore the outrage. They do care about unintentionally offending players. This DLC questline unintentionally offended players in various aspects. Worse, it contradicts statements made before release, although there are some interpretations that vaguely allow what they've done. It's basically Ubisoft's version of the statement Bioware made before release about ME3's ending. If you say one thing and then do another thing, people get upset. Rightfully so, to varying degrees.
There are multiple complaints of varying degrees of sensibility. Ubisoft are willing to make slight changes (such as renaming the achievement) to alleviate some of those concerns. And that's respectable. That's a developer that listens to its community and isn't a dick. They can't please everyone but they can try to avoid carelessly upsetting players for no good reason.
But like I say, this is a fairly special case. Far Cry 5 demonstrates Ubisoft's willingness to smash the players in the face with a shovel and then smugly ignore their howls of anguish -- then announce a sequel that firmly cements said the game's ending as canon. This ending spawned an unbelievable wave of upset. I remember people on social media finishing the game and then talking about how they were so angry they were shaking. They felt the implications of the ending were a moral violation.
Far Cry 5 is a textbook example of "strong and unified community backlash". But it's also an example of Ubisoft sticking to their guns because they had a story to tell, and a sequel already in development. People are still angry. That single scene made thousands and thousands of players -- potentially millions -- be so disgusted that they never wanted to play the game again. it was dead to them. They went from loving the game to despising it within minutes. A number desperately tried to cling to "it was all a dream" conspiracy theories because the game's ending was so upsetting for them.
