It's not entirely clear to me what it really is that UK authorities have ordered Apple to do. If this is just about iCloud advanced protection as some sources

It's not entirely clear to me what it really is that UK authorities have ordered Apple to do. If this is just about iCloud advanced protection as some sources say then I don't see how it would be suicidal for Apple to comply by disabling this optional and off by default feature for UK users. But other sources claim that the order goes a lot further and doesn't just affect UK users. Does it include E2EE for Apple's password manager for instance? Does it include E2EE for iMessage? Does it include 3rd party E2EE apps in the App Store?