Ferret, the answer to your question is yes.
Licensing requirements are controlled by the States and are subtly different. If you are starting out and want to ride a large motorcycle in Queensland, from October this year you will have to:
1. Have held a provisional license for another class of vehicle (say, a car) for at least 12 months before you can apply to get a motorcycle license.
2. Hold a learner's license for at least 3 months, during which time you must be supervised while riding.
3. Complete a mandatory test that will allow you to hold a restricted license for at least 2 years. This will allow you to ride a LAMS-approved bike—see below. You can stop at this category if you want. LAMS=Learner Approved Motorcycle Scheme.
4. Apply for an unrestricted license which you will obtain after satisfactorily completing a mandatory course. Note, you have to do this only if you want to ride a big bike.
The limitation imposed by being limited to a LAMS-approved bike is:
"A learner approved motorcycle is a production motorcycle that is fitted with an electric motor, or has an internal combustion engine with a capability of not more than 660mL, and has a power-to-weight ratio that does not exceed 150kW/t."
If you're happy to stop there, you can stick with the restricted license; but, if you wanted to ride a CB1100 you would then have to apply for the unrestricted motorcycle license.
If you look at the article referenced in the original post, you'll see a list of the best selling LAMS bikes.
It also explains why there are lots of small bikes sold in Australia.