The problem with this explanation is that it asserts that the people attending the test centres were symptomatic.
1. Symptomatic of what? September is rhino virus season. Back from holidays, back to school, back to University and so it cannot be assumed that even someone with symptoms had Covid.
2. Mass testing was taking place in schools and Universities - no symptoms required.
3. Local authorities often had a "Come of Down" policy for their mobile testing centres, such as here in Blackburn where as late as 9th September the Council announced on Facebook that anyone can be tested.
They even had teams going around knocking on doors asking people to sign up for a test.
4. People were booking tests and ticking the appropriate symptoms box to get a test. Sometimes prior to, or after travelling overseas.
So whilst it sets out the issue of false positives, it seeks to discredit the validity of the concerns raised.
BBC speaks with forked tongue.