This also enables Amazon to claim you purchased a different item than you did, or charge a different price. The only way to obtain documentation of a purchase is to take a screenshot of every transaction.
I bought some lightbulbs from Amazon recently. I am quite sure I purchased some 7-8 watt LED candle bulbs. I received a package of 50 watt incandescents, which was definitely not what I wanted. I went to my Amazon account and it showed I had purchased the incandescents. I looked at my email receipt, and all contained was is a list of links to Amazon, which led to their site, showing I had purchased the incandescents. The lack of text in the email meant I had no way to determine what I actually purchased and whether the mistake was on my end, Amazon's or the third party vendor.
You probably unintentionally got caught in a review whitewashing scheme, where a well-rated product gets renamed and its specification and pictures updated to an entirely unrelated (or in your case, somewhat related) product so the seller doesn't have to start from 0 reputation.
I had a very similar thing happen to me. I bought some AirPod Pros on sale and received normal AirPods and the Amazon order history indicated I ordered them when I know for a fact I had not. I was able to exchange them and all, but it was super frustrating.
The invoices and the "order details" page (one that looks like it's from 2000's internet) should retain the item description at the time you bought the item. That's how I successfully claimed a refund on the item that claimed "2 of item" and shipped me only one.
I bought some lightbulbs from Amazon recently. I am quite sure I purchased some 7-8 watt LED candle bulbs. I received a package of 50 watt incandescents, which was definitely not what I wanted. I went to my Amazon account and it showed I had purchased the incandescents. I looked at my email receipt, and all contained was is a list of links to Amazon, which led to their site, showing I had purchased the incandescents. The lack of text in the email meant I had no way to determine what I actually purchased and whether the mistake was on my end, Amazon's or the third party vendor.