2019 Ram oil concerns

I know oil posts open a can of worms but, hold on. I took my 2019 Ram 5.7 hemi in for it’s first service. I had all intentions of having a full synthetic oil change. The service manger says you have the extended warranty from FCA, not third party. Long story but, the dealer provided it after I bought the truck because of an issue. The service mgr says I can do synthetic but, they recommend conventional Mopar spec oil every 3-4K. If I follow their plan, I get oil change, fluids, tire rotation and the once over for $22. He says the customers following their plan have had no cam issues and 200-300k on the clock. What ya think?