An ignorant statement. There are lots of people who don't feel comfortable buying items worth thousands of dollars through the internet or from some rando on Facebook marketplace. They want to try on the item. They want to know they are getting an authentic item. They want to know the item is new. They want the item covered under warranty and they want to know who to see if something goes wrong.
I've purchased the vast majority of my watches pre-owned and online. But I'm not normal. I'm a watch fanatic and probably know more about watches than most sales associates at watch shops. But I understand people who don't have this level of knowledge and just want to buy a really nice watch without unnecessary risk.