Fred although positive people may isolate there's no real incentive to log, is there - unless you're trying to claim the isolation grant?
I'm not convinced there's any personal incentive to test at all (we're talking symptomless testing here remember, with symptoms no advice has changed) but if you have chosen to test, then you're doing it for the general good aren't you? So you'd log it too for the same reason.
The "meeting loved one" scenario is possibly different - but then why if that was purely the reason would they have gone to the PCR anyway today, that seems like more hassle than simply registering the LFD?
Perhaps I have a rosy view on what people have done and will do in the general rather than personal good (and I'm hardly the most collectively responsible individual) Anyway, I guess we'll find out!
Not sure I agree on Australia being that high yet, a 1/3rd of the rate of Denmark isn't it and their testing is pretty robust? I think it's got a lot more growth to go!