What’s your point?
Mine is that all ooc jpegs are already processed. Ooc jpegs aren’t reality, even if you haven’t touched them since they came from the camera. An ooc could have been processed with a pinhole, miniature, dramatic, etc. art filter, but even if it wasn’t, it was processed in some way. It reflects a choice, if not on your part, then on the part of the camera manufacturer, who chose a default processing standard.
Detecting artifacts from multiple saves proves nothing. The image may subjectively (or objectively, even) reflect reality more faithfully after multiple saves than before.
Started out doing photography at the age of 6 using an uncle's old 1940 kodak brownie box camera. At 15 years of age, I decided to buy my very own 1975 Praktica SLR camera. I now shoot with a Nikon D850. I do unpaid TFP and commercial paid work.