It’s no one’s job to do anything. But if you want to achieve real world results you have to work with the psychology of real world humans. This isn’t a game with an even playing field, it’s real life where people that pursue truth have to work way harder than those that peddle lies.
It’s a completely understandable sentiment because it’s an inherently unfair dynamic, no argument there. But if you want to change things you have to change people and that requires acknowledging that human minds are resistant to corrections and get even more obstinate in the face of hostility. Especially when there’s a whole political movement of reactionaries that will lie about you to get their way.
Not everyone is worth the effort of course, some are too dogmatically attached to their beliefs and others are just contrarian assholes that like hurting others. But the existence of close minded assholes doesn’t mean they are the only people that exist.