You can't really compare cycle engines to auto engines when it comes to demands on oil.
10,000 mi is also way too much for an oil change in an auto under most conditions. The exception is short warm-ups and long run times at temp - extended highway trips. Short trips and cold temps deplete additives and require more frequent changes.
Running extended (or factory recommended) oil change intervals in a cycle engine is risky, and only advisable in optimum conditions with the best oil. For most, conditions are not optimum. They have no idea what oil you are using and under what conditions you are operating, so their recommendation is just a guess at best. They don't want their products to appear "maintenance intensive", so they stretch the intervals.
Use a good oil. Change it often. Oil is cheap.
That's just my opinion.
I would hardly call manufacturers recommendations "a guess at best". There's millions of dollars poured into R&D for vehicle maintenance recommendations, and while making them longer looks good, having reliability failures from being too conservative looks worse.
Modern oils are fantastic, even at 12+ months old and 10,000+ miles (ProjectFarm on Youtube has a great video). I've done my fair share of UOA's in my cycle, my car, and my parent's cars. I drive lots of highway miles, they drive almost exclusively 4-mile trips around town. We drive the same model cars. Still plenty of life left at 10,000 miles on the Walmart Supertech full synthetic special with good TBN's. I run Rotella or Delo in the bike, depending on what's on sale at the time. I change at 5k miles, oil and filter.
Bottom line is factory intervals are a happy medium for the "average" driver. If all that is driven is short trips, it's good practice to change sooner, but it's not going to grenade your engine. Oil is cheap but not a renewable resource, and is not environmentally friendly to use or dispose of. Money is money, and money wasted is money never had, but if changing sooner makes people feel better....