I did read the article. It and you did not answer my questions.

I'd like to get a little more context for this cherry picked stat. For example, what percentage of all NSW residents live in these "unaffordable" areas, or what percentage of people are currently paying "unaffordable" amounts for housing.

Another methodology issue (not as bad as conflating NSW and Australia) is they look at the median rent for an area, and compare it to a just-graduated teacher's salary. There's nothing wrong with a fresh college grad not being able to afford the 50th percentile house. How about the 80th percentile? When they go on to talk about "senior educators at the top of the pay scale" the number of roles in unaffordable areas appears to drop from 90% to 4%.