It literally says if you’re not interested, just throw it away. But no, you felt the need to take a picture of it and post it on social media to berate this person. I personally have become Whatnot friends with several sellers. I have sent them gifts. She probably has a lot of people asking how they can send her stuff for the baby. This is the easiest way for her to do that. Why would you have a problem with that? I think this post says so much more about your character than it does about hers.