// No, it’s not a waste of money. The government is damned if it does and damned if it doesn’t. They seem to be doing all they can to combat this virus and keep people safe. //
I'm happy to accept the second and third points here, but I'm confused how it applies to this specific scheme. After all, the mere act of doing something that has "Covid" in the description can't be its own justification. Is this scheme going to be successful or effective? That's a more important question to ask, and answer, and as far as I can see there's no attempt made to even try in your post.
The key criticisms levelled at the scheme are:
1. high relative rate of false positives, especially in the present period, when the levels of Covid are low compared to the peak;
2. high chance of false negatives, giving people false confidence to go out and thereby spread the disease further;
3. chances of low compliance, rendering the exercise relatively pointless.
It can't be the case that supporting the Government is unconditional. I want to support the Government to help it do the *right* thing. This may not be it, although I reserve judgement on that for now.