Why wouldn't you change the filters anyways? Thy are not that expensive anyways. The modern day quality nationally branded oils will out live the drain intervals on the filters. The filters catches the crud that your oil keeps in suspension. As an owner of an oil analysis laboratory testing a lot of different fluids and everything from high end exotic cars, power generations assets, industrial equipment and HD offroad equipment you really cannot know the state of the oil or wear unless you perform oil analysis. I see a lot of premium synthetic lubricants that can be used long after they have been drained. Some actually spec out close to "new" oil. There are a few fleets of class 8 trucks running 80,000 - 100,000 miles on the engine oil. They bring the trucks in for a PM and new filters and send them right back out.
Oil threads of any type always get whacky from myths, know-it-alls, because my grandpa did it that way or I read it somewhere.
I change my primary and trans when the TAN (Total Acid Number) starts to increase. If there's a mechanical issue, it might warrant a fluid change due to contamination from the mechanical issue. Gear oils can run a very long time without needing to be changed. Engine oils will need to be changed more frequently because the the violent nature of the internal combustion engine. You have high heat, soot, fuel dilution, contaminants being introduced through the air intake and so on.
My nickels worth
Jason