It's true, but probability of messing up things by mechanics is greater. For brand new cars only oil, filter, change after every 5K kms, brake service and bolts tightening after every 10 K are more than enough.
Cvt oil after 40 K kms or two years, Cat cleaning after 35-40 k enough (Meanwhile you can use a good catcon cleaner and fuel system cleaning).
Rest is not needed but if someone is happy to spend money and get more satisfaction it is up to him.