Long term but based on priority, as visually 'outdated' as they are, the reason they are kept for now is that the codebase being maintained in AOSP keeps devs time/effort focused on the constantly shifting security/privacy landscape. Every app we change requires resources (not always financial), especially as these aren't user but essential system based applications.

The benefit of being an open source project though is that if someone committed wants to step up to provide the changes while maintaining it they're more than welcome. Be great if the broader community could help us find/attract those talented developers. 😉