The latest Windows 10 preview version (beta) allows more flexibility to uninstall some of the built-in WIN10 apps.  These changes are likely to be seen in future Spring 2019 features release.

https://www.pcworld.com/article/3314776/windows/microsoft-offers-to-kill-more-of-its-own-bloatware-with-a-new-windows-10-build.html

Announcing Windows 10 Insider Preview Build 18262

For Insider build 18262 of Windows 10, Microsoft said it would allow users to uninstall several of its own apps from within the Start menu. The build isn’t part of “Redstone 5,” officially known as the October 2018 Update, which Microsoft is working to finalize. Instead, it will ship as part of the next, unnamed update due sometime in the first half of 2019.

In this new build, you’ll be able to right-click and uninstall the apps via the Start menu, Microsoft said.

The apps users will be able to uninstall include:

3D Viewer (previously called Mixed Reality Viewer)
Calculator
Calendar
Groove Music
Mail
Movies & TV
Paint 3D
Snip & Sketch
Sticky Notes
Voice Recorder

The list includes a number of utilities, such as Snip & Sketch; some of the more basic apps whose functions are reproduced in Office, like Mail; and apps like Paint 3D which may have never taken off. Before the October 2018 Update, Microsoft previously allowed users to uninstall a few more, including Skype, Tips, Print3D, Weather, and some others