Conflating fatalism with irresponsibility is a popular opinion. There are many paths to this mindset but most are reactive and instinctual, not intentional at all.
For example, the wounded sometimes struggle to find courage, the betrayed sometimes hesitate to trust, and underdogs sometimes give up early. People are people.
It’s important to understand this because scolding or shaming a discouraged or weary person for not doing enough usually does more harm than good. If you want someone to help change something, you must
Convince them that change is actually possible,
Inspire them with how much better things could be, and
I think in a lot of cases this is true, but as a flip-side to that, a lot of people use the idea that people should be capable of changing to avoid having to alter their behaviour toward, or expectations of, neurodivergent folks
If there's one thing people will not do to make a situation better, it's to actually get up and do something themselves about it.
Especially if it requires that person to give without expectation of directly receiving something in return - never mind the concept of "be what you want the world to be".