This 'process' has been going on for over 20 years or so now.
For example, how long is it since the 'non-essential' Perth NDB at Pt Waylen, Attadale / Alfred Cove, was decommissioned due to it being deemed 'uneconomic' / 'non-essential'..?
This NDB had a 'terrific' range out over the Indian Ocean, with some of the 'Springbok' and Qantas crews reporting it at a 'looong waaay' out, at times...
No GPS then......
Anybody remember it? Used to use it??
There must be many more such examples.
Similarly, there used to be a Marine NDB at Cape Leeuwin, which some pilots who knew about it, used to......
Dems were de days.....
The loss of 'domestic' NDB's will be sad loss for the G/A guys, especially at 'remote locations' in de middle of de night....