You must be aware I am one of the two e-bikers in the whole Mazovian gravel cycling community (my brother is ready to convert to a mechanical gravel bike when we are at it). E-bikes do not fit the format, especially because of the relatively short range. I could complete my 263 km ultramarathon only because I could recharge my batteries at an overnight stay. That's also one of the reasons I have never bought the gravel version of the Creo, and am working out to start in the Mazovian Gravel race on a traditional bicycle in 2024.
How ironic, you call Australia a backwater yet there are only 2 evolved gravel bikes in your region?
For what it's worth, in my town of 4500 people I'm aware of 3 gravel ebikes. None of them are used for structured events.- just rides with their social groups . ( usually day rides around the 100 km mark - mostly on gravel)