> You need to start that because, as we recently learned, at some point in the very near future Apple is withdrawing its Advanced Data Protection (ADP) feature from the UK altogether as a result of the Home Office TCN through the Investigatory Powers Act. So, a UK-only advice, and it strangely assumes that any other service in UK wouldn’t be bound by the same laws.
I suspect it's because whilst other services would be affected we only know about Apple currently and, thanks to iOS and Mac, a large percentage of the population will be using Apple by default for the services impacted. Only Google (Android) and Microsoft (Windows) really overlap in that regard.