You can (1) create startup, shutdown , logon, or logoff script for the group policy, with this command inside;
No, since that command is not silent.
@pkafkas: did you try and add the usual suspects:
/s /silent /q /quiet /verysilent
behind uninstall.exe? Often, these work. Use one of them, not any of them in each test, for example
"C:\Program Files (x86)\FOLDER_HERE\Uninstall.exe" /quiet