I suspect that there is some sort of short-circuit between the clients (those that ask for features) and the programmers (both the "software architects" and those that actually implement the apps/sites).
Speaking of Government issues (in these times of COVID-19) there are certain categories here in Italy (restaurants, hotels, cinemas and similar places) that have by Law the need to check customers' "green pass" (officially EU Digital COVID Certificate (DCC)).
This can be done exclusively through an app (Apple or Android) written by what is loosely the IT branch of the government.
What the app does is simply scanning the QR code and check the validity of the pass (by some algorithmn and checking also a sort of blacklist).
There is no technical reason on earth why this could have not been made OS/device independent, or at least the Irish (EIRE) one is a "normal" site[1] that works on any recent browser.
Questions are:
1) was it the government asking for a dual (iOS/Android) app (and no site)?
2) or was the SOGEI (the government connected IT firm that wrote the apps[2]) to decide to NOT make such a site?
[1] https://app.digitalcovidcertchecker.gov.ie/
[2] BTW the actual Android app at least - cannot say the iOS one - needs a relatively recent Android version, cannot remember exactly, probably 8, so that using your old phone wouldn't do.