They can because "Android" is open source. It's a confusing mess, but that's probably by design so they can say "Android is open" whist strong-arming vendors as the term "Android" is used to multiple things.
Sure, but does it still use Java?So if Samsung wants to leverage Tizen it's wrong? Does that make Apple wanting to leverage their OS wrong, too? I at least support a company wanting to be more independent and frankly I'm happy to see Google and Samsung duke it out.
1) Does that make it right?2) Google losing Samsung is a major hit against their Android adoption. If they can't get Samsung to offer Android in wearables then Android may never have a chance to gain a dominate marketshare. For that reason I want Samsung to successfully offer Tizen in all their devices that might otherwise run Android.