I get what you're saying though I do feel a bit differently. My comment was because the other poster said they were surprised the mail person took notice to the consistency in packages being delivered. I don't honestly find that surprising. I,as a neighbor, notice that the house in the cul-de-sac near me gets a lot of deliveries from a local grocery store but I wouldn't expect a mail person in my area to notice because we have cluster mailboxes with no consistent assigned mail person. Also nowadays a lot of
Amazon packages are delivered in our area by Amazon Logistics. BUT I can understand how in a small community that has a regular mail person that the mail person would notice that it's a typical habit to be delivering packages to a specific person.
I would agree if the mail person was asking "so what do you order that you get so many packages" or something similar that would be an invasion of privacy. My gut reaction to the OP's situation is a commonality in the form of chit-chat not that they were invading the OP's privacy and not that they were trying to be judgy but that's just my gut reaction.
If you were to ask me though I don't think the situation as described the OP as an invasion of privacy. The OP is interpreting this as the mail person being judgemental. The OP brings up ceramic dolls bought from QVC as if that should be cause for embarassment (and I mean that in a respectful way). The OP feels like she needs to provide explanations for exactly what she's been ordering (clothes, things for the home, halloween costumes, lids for frying pans, etc) all of which it hasn't been clear if there has ever been a need for such rationales for purchasing things online. If the mail person point blank asked the OP "what's in this box, what's in that box, etc" that would come off, even in a friendly manner, as over the lines but my first defense if the mail person were to say that would not be to defend my actions by explaining just what type of stuff I've been ordering. I would just say "this and that" and leave it as that. I actually do sorta agree with posters who have brought up maybe this is something more an issue with the OP feels about things (i.e. insecurity) though I'm not meaning that in an insensitive way.
This is just me personally but we're talking about non-descript Amazon Prime packages. We're not talking about possible sensitive medical bills and we're not talking about late water bill notices. I'm not there at the OP's place to hear tone and inflection and body language but if all things considered with a friendly manner I would just take it as chit chat and not as something worse. Maybe what makes the OP so uncomfortable is the small town aspect IDK.
I do understand that you were generally speaking as opposed to this specific point of the thread but my feelings on the specific point to this thread blend into my overall feels of the type of situation we're talking about (mail person commenting on mail being delivered).