Look, you're not wrong. Google / Apple sure, their approach isn't perfect by any means - there's a good argument to be made that this whole thing is a folly and is never going to work because people will be uncooperative and just refuse to install the thing, or turn their phone off because they don't trust big-data / the gubbermint snooping on them.
Facetious spelling aside, I do appreciate that concern. I don't really trust Google, Apple or the British government with my data either.
But since apparently we're doing this shit regardless, how about we just go straight to the bit where we buy into the system at at least technically sort of works if everyone co-operates and then wait for it to fail when they don't as opposed to the one where we spend a few hundred million on filling contractors pockets first and then STILL have to go back to what pretty much everyone else did?