Fair enough. I'm certainly aware of what is happening westwards at places like Rouse Hill/North Kellyville/Box Hill/Schofields etc. I frequent the place regularly through my work.
What you will find when the NWRL opens, is that new bus services will be more comprehensive throughout the area, focused towards the metro stations, thus relieving the need for many of these people to drive to stations looking for parking. I've posted a couple of examples below.
What annoys me most though, and it has nothing to do with high density units, is the thousands upon thousands of houses being built in these areas without the upgrade of local roads such as Annangrove Rd, Glenhaven Rd, Withers Rd, Hezlett Rd, Foxall Rd etc.... FFS, even Samantha Riley Dr is still a half built abortion.
Developers, of which there are many, are responsible for the development of the road and street frontage in front of their proposals, so it has been a hotch potch of a bit of new rd here, a bit of new rd there. Foxall Rd is the perfect example. These roads are now major thoroughfares, choked with traffic continually at intersections. Glenhaven Rd should have been 4 lanes years ago. FFS, the state govt just announced widening Memorial drive in Kellyville to 4 lanes. Should have been done 20 years ago. Showground Rd in Castle Hill has only just been done. That should have been done 30 years ago.
I agree though, that the planning policy is ok for some areas, and not for others. One size does not fit all.
Anyway.....
This is indeed, poor planning policy.