Not a Sydneysider, but I wouldn’t say there’s a ‘strong anti-semitic feeling’ anywhere in Australia - at least not in comparison to the levels of villification faced by any non-‘white’ ethnic group.

I though this was interesting:

“We are looking into whether overseas actors or individuals have paid local criminals in Australia to carry out some of these crimes in our suburbs,” Australian Federal Police (AFP) Commissioner Reece Kershaw said, adding that it was possible that cryptocurrency was involved.

from: www.bbc.com/news/articles/c8057j0mz5mo

If these attacks are commissioned, it’d make some sense of some of the graffiti misspelling “Israiel”.