There are two parts where local authorities need to be involved: troll-proofing the way people flag themselves as infected and translating exposure into actiona

There are two parts where local authorities need to be involved: troll-proofing the way people flag themselves as infected and translating exposure into actionable instructions/suggestions (e.g. different testing capacities require different testing strategies). I agree that Google/Apple could have done a lot more, like an OS-branded App with extensive functional localization in cooperation with local authorities. But looking back at how pretty much every country was initially trying very hard to avoid working with the OS makers Google/Apple might not be to blame at all for merely providing a minimal API instead of a complete turnkey solution. Governments all over the world were only coerced into adopting the API by malware countermeasures already present in the operating systems, almost like a sudden vindication of Lessig's old "code is law" claim.