This is good advice. I have a maverick on order. The manual for it says under severe driving conditions the trans fluid needs to be changed every 30k and 60k otherwise.. The thing is, severe driving conditions include frequent stop and go driving. Basically, anyone living in an urban or dense suburban area is under severe driving conditions. It makes sense since stop and go driving requires frequent shifting.
Also, if you remember the "car talk" guys, they always said the worst thing for a car is hard acceleration, which also makes sense since you vastly increase the amount of stress and wear on basically every moving part. So drive easy and change the fluid frequently. I wish I had known that years ago.