Is the harm then a) that these people are exposed to the larger ideology, or b) that these people don't have the critical thinking tools or habits to see these

Is the harm then a) that these people are exposed to the larger ideology, or b) that these people don't have the critical thinking tools or habits to see these ideologies for what they are? I think it's (b). In life we are exposed to a lot of bad ideologies, and the only thing that can help us navigate these ideas is our own thick skin and critical thinking tools and habits. The only way you develop these are through exposure and practice.