No. Read the post carefully. If I order a Ryzen 1800X today, and Amazon send me two. I can keep both because they can't ask for it back per FTC regulations. I only ordered one, got charged for one, and got two. They can kindly ask to send it back, but that delves into grey law and they're banking on you not knowing about it. If Amazon decided to charge me for the second item later on, I can report them to the FTC and they will be asked to roll back the charge and they'll be fined for their action. The order page clearly stated I wanted only one, but if I got two, I cannot be charged once more for the second item. Thus it's up to my own good will to either send it back, sell it or give it as a gift.
They have been cases in the last few years where Amazon's accidentally sent people thousands of dollars worth of items with their measly order and were told to just keep it. Because the write off to them is always cheaper than sending it back and processing it.
I'm not sure how much clearer I can be to you. If you get unsolicited goods sent to your address, you are within your legal right as an American to keep those goods. You may not be charged for those goods either. If you are, you simply complain to the state AG and the FTC. Though these apply more to shady companies. In my prior example, if I ordered one 1800X and got two, I get to keep the second one. I only solicited one unit from Amazon, not two. The second is an unsolicited good. Amazon cannot charge me for the second unwanted good if they noticed it later on, and I'm not obligated by law to say anything to them.
If you're ordering from a questionable company, charge it on your CC that has decent protections, like AmEx. Your creditor will laugh in their face once you explain what happened and fax or email them proof of you only buying one item. The creditor will deny the second charge.