I was in the repair industry…
I was in the repair industry for nearly 30 years. I ran independent shops and worked for four different manufacturers. The ICE has not really changed much internally in 100 years, except maybe for low tension rings. Everything surrounding it has. Higher operating temperatures for emissions. Direct injection. Forced induction. Yes todays oils are far better than decades ago, but it is subjected to more than it was decades ago.
Long service intervals and 'lifetime' fluids are bs. They're simply a marketing strategy to make you feel the vehicle will cost less to maintain. I've seen luxury-branded hand built engines burning oil by 30,000 miles. I've replaced transmissions with 'lifetime' fluids with barely 100,000 miles.
If you're the type that leases every 2-3 years, then do whatever they recommend. It'll be someone else's problem in three years. If you're like me and tend to keep your vehicles until they're no longer useful: First oil change at 1,000 miles, then every 5,000 afterwards with a good synthetic. And service the transmission every 50-60K.