Is having iron talismans to protect against dark spirits actually dangerous in terms of attracting dark spirits?

This again has the same pitfall. It, in a sense, is making a declaration “I am fearful of dark spirits and seeking refuge.” This is not the best way to stand strong and present a united front and be invincible, and so is more an advertisement to these dark forces to know there is someone who understands and is fearful of their existence, and it is kind of an invitation to take them on. It is kind of like a sport for these beings.