Hmmmm:

From 1 March 2029, only e-bikes meeting the European standard will be road legal in NSW, with the three-year period reflecting the typical lifespan of an e-bike, providing those who purchased an e-bike legally- and those who sell them- time to adjust to the new rules. 

I dunno what these people are doing to get only 3 years out of a bike.

Probably makes sense. But they don't enforce the ebike laws they already have, so will they enforce this?

e-bikes and e-motos are great and we need legislation to allow their use.

I can buy a 1000cc motor bike, I'm licensed to ride it, I should be able to buy a 3kw ebike and have some laws to follow which allow for its use.