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LG TVs and monitors said to surveil users and install bloatware without asking
(www.notebookcheck.net)
This is a most excellent place for technology news and articles.
You can search for it by the appx name and then use a pipe to remove the package. Then you don't need to worry about specific version numbers:
Get-AppxPackage -Name 'LGElectronics.LGMonitorApp' | Remove-AppxPackage