[mothered]

Where I found what information to be exact?

As mentioned above, pertaining to this:

I believe that the owner or some other SE'er will do a warranty request on the product and give the same serial number

I'll rephrase my question. What gives you the Impression that the owner or some SE'r will In fact do a warranty claim?

Because there’s methods out there for SE’ers to use a serial number when doing a request for replacement of the product. Many well known forums and discord servers are sharing a method for UE. Moreover, the owner may do a warranty claim longer down the line when it becomes defective and what happen when the owner show a valid receipt/invoice of the package? Or many se’ers use the same serial number? Wouldn’t that ring any bells on the company?

I understand how It works. I've been In the scene for 25+ years.

I'm more so referring to why you're questioning the (long shot) probability of a given user submitting a claim against a serial. It may or may not happen- the likely hood being the latter. When you SE, try not to overthink It. Take It for what It Is at the time, rather than drawing conclusions that may never eventuate.