Is blankie a problem?

My daughter is 1 y/o. Since she was newborn, we used this light blanket to shade the car seat when driving. As she got a little older, we realized that when we put her in the car seat, she was using the blanket to self soothe. After that, she takes her blanket EVERYWHERE. God forbid we forget that blanket. It’s like her best friend. So here’s my question. I’m not sure if any of you are familiar with “aware parenting” but in the book, “im here and im listening” it talks about how objects are a crutch for dissociation and it distracts them from their true feelings, etc. (if im even getting that right). So is the blanket a problem? Am I a bad mom for letting her have the blanket?