> This [2] post also documents Cliqz being covertly auto-installed with .NET Framework.

No, it documents the same thing as the other link - that unrelated chip.de downloads (including .NET Framework, though I have no idea why anyone in their right mind would source that from chip.de) are by default wrapping any downloads in a "secure CHIP installer" which is chock full of dodgy adware installations, apparently including Cliqz without any mention or option to remove.