Sydney is full of trannies and is about 5 times bigger than Adelaide. Whilst the cost of living is horrendous, he could probably make ends meet by sucking cocks in and around Oxford Street and/or the Cross. As such, I wouldn't be surprised if he actually did move over there rather than just saying he did to try and throw internet sleuths off his trail.
Whilst voting is compulsory in Australia, it's up to the individual to register themselves. The voting age is 18, but Australians can register on the electoral roll from 17 years of age. I suspect Ethan is just too slack to register, especially if he's a NEET edgy boi.
As for Klemzig, it's lower middle class.
Pretty much. There's some gentrification as well, particularly South of OG Road and the East along the River Torrens. In typical Australian suburban style, there's everything from scabby little blocks of flats full of junkies and housos right through to McMansions/Wog Palaces, often within metres of each other.
Way back in this thread, there was an article posted from when Ethan was about 13. The article is mainly about something happening to his cousin on the Sunshine Coast (something about bullies stealing his skateboard or some shit IIRC). Ethan was most likely up there visiting family during the school holidays. He could have family or friends in Sydney too. Maybe one of his simps has taken him in. Who knows.