'Eora' is actually the name of one of the many indigenous languages. Using it would be like calling a town or location 'English'.

I lived on a farm in the mid coast of NSW where once there was a midden with a native lemon tree and sharpening stones and fish traps in the river. The campsite burnt down in the late 1800's, burning an 18-year-old young lady who was buried on the farm. My Grandparents took in her young sister after her parents passed away. This area had an established aboriginal family, and would have had an aboriginal name, but none of the tracks represented the new road layout.

I prefer native names for rivers, mountains, lakes etc as they were named before the British arrived & were natural, not built. The towns & cities on the other hand were named by the people (the settlers) who built & named them.
Each town should have a park/parks in the native name for the specific area.

Here's a bit more information:

There are about 29 clan groups of the Sydney metropolitan area
referred to collectively as the Eora Nation. The "Eora People"
was the name given to the coastal Aboriginal people around
Sydney.

"Eora" means "here" or "from this place".

The Gadigal are a clan of the Eora nation.

Talking about languages?

"The Sydney language" is the name given to the Australian
Aboriginal language that was spoken in the greater Sydney area
comprising Dharug and Eora. The names Dharug and Eora were
given by linguists to refer to the inland and coastal dialects
of the language. (Macquarie Dictionary).

There's more at:

http://cityofsydney.nsw.gov.au/history/aboriginal-histories

Is it helpful?

Depends on who you are and your aims.

For most of us, its neither helpful nor important. Just more blather.

But for those that crave the warm inner glow of doing 'sumfing' for our natives, its a costless 'sumfing' and that, for them, is the most helpful of all. Costless and full of virtue - or full of 'sumfing'.

How predictable from the 'usual suspects', there's those undeserving Black Fellas being given something that should be exclusively in the White Mans domain. Sydney is Sydney, and is rightfully named after Thomas Townshend, 1st Viscount Sydney (1733 to 1800). The fact the bloke never came within 10,000 miles of the place is beside the point, he was white, British, male and from the right class in society, what more could some ask for! AND if Sid had ventured to Sydney Town, named in his honour at the time, he would have believed it to be such a sh!t hole he would have boarded the first boat out of there, back to good old mother England.

Anyway, its Paul here posting from the land of the Quandamooka people.