That means you did not care the opinion from the place where the route was opened for!
Extending the route to Nam Cheong/ Hoi Lai has only little effect to the
residents living in Castlepeak Road / Rivera Garden,
provided that it still maintains a stable frequency.
BTW, 38A is not solely opened for the residents Rivera Garden.
It's opened for the residents living in Castlepeak Road as well,
even though they have other alternative routes, while those living in Rivera Garden do (may) not.