You are 100% correct, but many people do not follow the "rules". People will try to use the Vision Pro in public places. Yes, that will not be wise (or the "intended use") but people will still try to do that.To reiterate, it doesn't appear to be intended for wearing while out and about, but for use where using a laptop is already accepted: at home, in an office, in an airplane, at Starbucks, and so forth.
You only need to look at airtags to see how people are not using it for its intended use.