I think some xenophobic Americans deliberately fight against wearing masks partly due to media exposure over the years showing people in Asia, mainly China, wearing masks as part of daily living in their culture.
An attitude that we're better and 'we don't want to be like them' helps spread viruses, and may have cost people their lives with covid. Americans are terrified that we might be forced to adopt mask wearing as a practice into our daily lifestyle and 'free' culture.