It is possible to uninstall Win10 preinstalled (built-in) via powershell in admin mode. The generic command  to remove APP_NAME is:

get-appxpackage -allusers APP_NAME| remove-appxpackage

To remove the app only for the current user remove the srting “‘allusers”.

Credits: A deeper explanation of the commands is given in this article from which the commands are taken and modified):

• https://www.askvg.com/guide-how-to-remove-all-built-in-apps-in-windows-10/
• https://www.howtogeek.com/224798/how-to-uninstall-windows-10s-built-in-apps-and-how-to-reinstall-them/
• https://docs.microsoft.com/en-us/windows/application-management/apps-in-windows-10

Here it is the list of the commands:

To uninstall 3D Builder:
get-appxpackage -allusers *3dbuilder* | remove-appxpackage

To uninstall Alarms & Clock:
get-appxpackage -allusers *alarms* | remove-appxpackage

To uninstall App Connector:
get-appxpackage -allusers *appconnector* | remove-appxpackage

To uninstall App Installer:
get-appxpackage -allusers *appinstaller* | remove-appxpackage

To uninstall Calendar and Mail apps together:
get-appxpackage -allusers *communicationsapps* | remove-appxpackage

To uninstall Calculator:
get-appxpackage -allusers *calculator* | remove-appxpackage

To uninstall Camera:
get-appxpackage -allusers *camera* | remove-appxpackage

To uninstall Feedback Hub:
get-appxpackage -allusers *feedback* | remove-appxpackage

To uninstall Get Office:
get-appxpackage -allusers *officehub* | remove-appxpackage

To uninstall Get Started or Tips:
get-appxpackage -allusers *getstarted* | remove-appxpackage

To uninstall Get Skype:
get-appxpackage -allusers *skypeapp* | remove-appxpackage

To uninstall Groove Music:
get-appxpackage -allusers *zunemusic* | remove-appxpackage

To uninstall Groove Music and Movies & TV apps together:
get-appxpackage -allusers *zune* | remove-appxpackage

To uninstall Maps:
get-appxpackage -allusers *maps* | remove-appxpackage

To uninstall Messaging and Skype Video apps together:
get-appxpackage -allusers *messaging* | remove-appxpackage

To uninstall Microsoft Solitaire Collection:
get-appxpackage -allusers *solitaire* | remove-appxpackage

To uninstall Microsoft Wallet:
get-appxpackage -allusers *wallet* | remove-appxpackage

To uninstall Microsoft Wi-Fi:
get-appxpackage -allusers *connectivitystore* | remove-appxpackage

To uninstall Money:
get-appxpackage -allusers *bingfinance* | remove-appxpackage

To uninstall Money, News, Sports and Weather apps together:
get-appxpackage -allusers *bing* | remove-appxpackage

To uninstall Movies & TV:
get-appxpackage -allusers *zunevideo* | remove-appxpackage

To uninstall News:
get-appxpackage -allusers *bingnews* | remove-appxpackage

To uninstall OneNote:
get-appxpackage -allusers *onenote* | remove-appxpackage

To uninstall Paid Wi-Fi & Cellular:
get-appxpackage -allusers *oneconnect* | remove-appxpackage

To uninstall Paint 3D:
get-appxpackage -allusers *mspaint* | remove-appxpackage

To uninstall People:
get-appxpackage -allusers *people* | remove-appxpackage

To uninstall Phone:
get-appxpackage -allusers *commsphone* | remove-appxpackage

To uninstall Phone Companion:
get-appxpackage -allusers *windowsphone* | remove-appxpackage

To uninstall Phone and Phone Companion apps together:
get-appxpackage -allusers *phone* | remove-appxpackage

To uninstall Photos:
get-appxpackage -allusers *photos* | remove-appxpackage

To uninstall Sports:
get-appxpackage -allusers *bingsports* | remove-appxpackage

To uninstall Sticky Notes:
get-appxpackage -allusers *sticky* | remove-appxpackage

To uninstall Sway:
get-appxpackage -allusers *sway* | remove-appxpackage

To uninstall View 3D:
get-appxpackage -allusers *3d* | remove-appxpackage

To uninstall Voice Recorder:
get-appxpackage -allusers *soundrecorder* | remove-appxpackage

To uninstall Weather:
get-appxpackage -allusers *bingweather* | remove-appxpackage

To uninstall Windows Holographic:
get-appxpackage -allusers *holographic* | remove-appxpackage

To uninstall Windows Store: (Be very careful!)
get-appxpackage -allusers *windowsstore* | remove-appxpackage

To uninstall Xbox:
get-appxpackage -allusers *xbox* | remove-appxpackage

To reinstall them all:

Get-AppxPackage -AllUsers| Foreach {Add-AppxPackage -DisableDevelopmentMode -Register “$($_.InstallLocation)\AppXManifest.xml”}

Enjoy