That depends on who you are listening to.....
If you are following the MANUFACTURER's suggested service intervals, your statement is false, the manufacturer of your tractor (car, van or jeep) has a vested interest in INFREQUENT service requireents - low operating costs and hassle.
If you are refering to the "fast lube" types then you are 100% correct, those wankers want you to service everything each visit if they can fool you into it. They even go to extremes like claiming "most people" should use the severe service schedlue.... nothing could be further from the truth and even when they are correct, the intervals they suggest are WAY too short from my experiences.
At the end of the day, service intervals are determined by careful review of the data and suggested by the OEM based on extensive testing with the goal of minimizing costs without negatively impacting reliability. Remember, all lubricants and fuels absorb moisture from the atmosphere even if you never start it. That moisture causes degridation of the oil/fuel (sludge), which over time can render it unsuitable for the intended use.
My suggestion would be to follow the maintenance guidelines as established by the OEM in the Operator's Manual.