People don't realize what they say. Often their hearts are in the right place but they completely screw up on the delivery.
My brother encouraged me to go for walks every day. My ex told me he was scared for me. My mother told me when she saw I was losing weight from the meal replacement diet pre surgery that "see you don't need the surgery, just keep doing what you're doing now..." and then day of surgery, was told "it's not too late to change your mind!"
i believe these statements are fear driven.
Like I said- heart in the right place.