I suspect this is a bit of a rant but sometimes I indulge!
I was looking at the current Tasmanian SA alerts. I was in SA last week and travelled back on the 11th. SA had a Covid +ve travel in from Sydney on VA406 the day before. The Tasmanian site identifies Adelaide airport as high risk on the 10th from 9.20-10.15am, the male toilets from 9.40 - 10.10am, the Covid testing site from 9.45 - 10.20 am and the lobby of the Atura Hotel from 9.30 - 10-30 am.
My rant relates to the broad brush approach here. VA406 landed at 9.16am. After landing, every pax goes through the Covid screening. Being from Sydney, this would not have been quick. Regardless, the entire airport is high risk from 9.20 onwards. Doesn't matter if you were sitting in the Qantas lounge, or waiting to board Jetstar at the other end of the terminal; you've been in a high risk area and you cannot travel freely to Tasmania. If you're here, it's off to isolation or possibly hotel quarantine.
The toilets are a pointless inclusion as they are within the airport and the time frame is within the airport time frame. Common sense would say that the airport should be medium risk and toilets high risk but they are both High risk, Level 1.
Jumping forward to the hotel lobby, they've pinged it for a full hour, just around the time people are checking out. Plane landed 9.16, yet our case apparently got through Covid checking, raced to the hotel by 9.30, presumably checked in, went back to the airport to use the toilet and off to the Covid test site before heading back to the hotel to hang about in the lobby!
My rant has a serious side. Back before SOE powers, if you wanted to lock someone up, it required a decision from a court. These declarations of High Risk areas can have exactly the same effect and if you look at them closely, you can see that they are being made with little scrutiny or knowledge of the actual situation. I would expect the 9.30 -10.30 hotel listing is simply because they didn't have an exact time so picked a band that covered the general area. To someone sitting in Hobart, it's very easy to just make the entire airport High Risk but to someone within the airport it can have serious personal and financial consequences.