Important
Working on the latest supported Windows versions. Run Windows Update before following this guide.
1. Open Powershell > RUN AS ADMIN
2. Paste in irm https://gist.github.com/ave9858/c3451d9f452389ac7607c99d45edecc6/raw/UninstallEdge.ps1 | iex
and press enter
3. Microsoft Edge will be completely uninstalled.
Note
The Microsoft Edge Update service might remain, this is normal as it is required for updating WebView2.
There is no option to manually uninstall. In control panel it can only be repaired and it requires "MicrosoftEdgeEnterprisex64.msi" to actually repair it, even if say I deleted the edge folders manually it will attempt to restore it in the next security patch.