Oils, engine tolerances and oil change recommendations have changed greatly over the years. I had a 2010 Ram CTD that specified changes every 7500 miles. Of course the oil filter was changed at the same interval and the fuel filter was to be changed every other oil change; i.e., at 15000 miles. Now I have a 2018 Ram CTD. The oil is synthetic and the change interval for the oil and filter is 15000 miles. Unfortunately the cost did not go down. There are now two fuel filters. Both are expensive and the recommendation is for changing at the 15000 mile interval.
Some owners are just determined to change oil frequently regardless of the manufacturer's specs. They somehow think the manufacturer is lying and wants them to buy a new engine. Owners were changing oil at 3000 miles when the specs called for 7500. Now we will see 3000 or maybe 7500 when the specs call for 15000 miles. I have always followed the manufacturer's spec. My last two vehicles survived the recommended 7500 mile intervals. My Izuzu lasted for 290K miles and died due to A/T failure. I sold my CRV at 190K miles when I retired and went full time in the truck camper.
If you are really pigheaded, you can always spend a few dollars and have your oil tested. You only need to do it once in order to confirm the manufacturer's schedule.