It is difficult to tell Daviesia genistifolia from Dillwynia sieberi from photos. However, Daviesia genistifolia is recorded 7 times in Cuumbean Nature Reserve in the NSW Bionet Atlas and Dillwynia sieberi is not. The easiest way to tell Daviesia from Dillwynia is that Daviesia ‘leaves’ taste bitter (do not pick a leaf in a reserve unless you have a collecting permit) and Daviesia pods are triangular and hairless. Dillwynia does not have these characteristics.
Looking at the way the phylodes connect to the stems it looks more like D. sieberi than D. genistifolia with the phylodes flush against the stem in Daviesia (looking at the images on your app and the line drawings on PlantNET). Also D. sieberi has been recorded at Cuumbeun on Nature Map. Unfortunately there were no pods on any of the pods I looked at.
Also would it be fair game to eat the leaves directly off the plant as long as I don't pick it? :p
Having had a look at the two fact sheets, I have decided your photos must be of Dillwynia sieberi, mainly because the photo on my app of the whole plant is from the Australian Plant Image Index (APII), which would have a pressed specimen of the plant in the photo held at the Australian National Herbarium. There are also closeups on APII at Cuumbean NR that look like Don’s and your photos.