What if the person with the Vision Pro got it to help with a physical disability, and it has greatly improved their quality of life? Or what if it was gifted to them by a now passed friend or family member, and now holds a great deal of sentimental value to that individual? Do you not agree that criticizing in these (and likely many other) instances would be an asshole move on your part?
You don't know how or why they obtained it, and their possession of it does not harm you in any way, shape, or form. Do you still not agree that being vocally and directly critical of the other person's simple possession of this item is an asshole move?