Thanks Thruster,
I see your point, I think essentially we are both right (Screenshots below). You dont need a Class 1,2,3 Medical for an RPL* under certain conditions (1 passenger, 1500kg MTOW, No acrobatics, Day VFR, 10,000 ceiling). You do however require an "RAMPC" which is very basic general health checkup consisting of basic questions and a few basic tests signed off by you and your local GP (Any GP). The GP tests are extremely basic things, Blood Presure, Pulse, joint movements, eye test, hearing test etc. The requirements are essentially the same as a general checkup. https://www.casa.gov.au/recreational-aviation-medical-practitioners-certificate-rampc-application
There is more to it than I was initially explained because the RAMPC form is required to be submitted every 2 years. I would expect the GP visit to be done in ~10 minute, plus the CASA $50 Admin fee. I've read through the questions/tests and TBH if I was answering "Yes" to any of them I probably wouldnt/shouldn't be flying regardless (RPC/RPL).
The RAMPC (Limited RPL) is more than fine for my flying criteria (experimental, 1 passenger, 1500kg MTOW, No acrobatics, Day VFR, 10,000 ceiling).
https://www.casa.gov.au/licences-and-certificates/aviation-medicals/medical-certificates/classes-medical-certificate#
https://www.casa.gov.au/licences-and-certificates/pilots/pilot-licences/getting-recreational-pilot-licence-rpl