You are looking at the list that is banned or restricted from import, and that applies under all circumstances. It covers both commercial and personal use, though if you look at the list you shouldn't be falling afoul of many of them.
In addition to the list you found, you'll want to peruse this list which tells you which items you need to declare. This is where you find items like food, seeds and meat:
Food, plants, animals and biological goods
Declare all food, plant
and animal goods, equipment used with animals, biological materials,
soils and sand to Quarantine on arrival. If you don't, you could be
given an on-the-spot fine or face prosecution.
The Customs inspector will then determine whether or not you can enter with the item(s), if it needs further inspection and/or fumigation in Quarantine, or if it can't enter Australia at all.
The majority of travellers will only need to be aware of a few guidelines:
- Items made from animal and plant byproducts will need to be inspected and sometimes quarantined.
- Processed foodstuffs are generally ok except for honey.
- Raw foodstuffs, especially fruit, are generally not ok.