Absolutely it could. And you would feel the same way too if someone posted your home address or Info about your kids schedules etc. That is dangerous information for the wrong people and once it’s there, it’s there.
We don’t know all the details, so maybe jail wasn’t warranted here (clearly the judge didn’t think so), but to say 5,000 aus is punitive enough.... I could see scenarios where it isn’t.
The problem with cash fines is that there are plenty of people who are good with money where $5,000 US dollars wouldn’t even be an inconvenience. Hopefully a judge could read that, but sometimes one day in jail is worse than $5000.
(And there are times $5000 is a death sentence for folks living paycheck to paycheck.)