Earlier quoted context omitted.
Tizen has other traits that might be more appealing, like the fact that it's open source. (And arguably, more open source than Android by far.) And if Samsung chose to start pushing Tizen phones over Android phones... bear in mind, Samsung is pretty much THE Android manufacturer, everyone else rides their coattails. Samsung is maybe the only company that can upset the apple cart as far as Google's concerned.
Without the Google Play Store Samsung's phones without Android are not going to sell.
Tizen also already can run Android apps, and if they add .NET support, could probably run UWP apps potentially as well. Many of us have left Android or are looking to leave Android, and an open source competitor with wide application support from a good hardware manufacturer would be a compelling reason to jump. Personally I carry an old Windows Phone to escape the Google monopoly, but obviously for many moving to a closed platform is less ideal.