Let me elaborate:
Australia's been doing record numbers of tests, hell even New Zealand is doing
40,000 tests a week.
Where are all the false positives?
In low prevalence & high testing areas, this false positive number should be even more evident. But it's not.
When cases occur, it's actual clinical cases. These people are sick. They're linked to ill travellers diagnosed as having COVID-19.
The test works to find infections. It can find them before you become sick.
It's nothing but a conspiracy theory touted by people like Elon Musk. The second he was diagnosed, he was questioning the results and thousands of people hopped on the band wagon.