not yet. He must do tug of war or sth like that with Jubbi or find a way to control it. then it will be its power. At current situation, Obito is a tiny part of Jubbi's power not vice versa
No, juubi is a large part of obito's power
Who does kurama belong to? Even before naruto became perfect?
All the other jinchuuriki? Their powers are only exclusive to their bijuu even though they can access them??
Yugito can go BM at will, yet she was never stated to be in cotrol of her bijuu, does that mean that every time yuguto goes 2 tail mode its not considered her power???
Obito sealed the juubi within himself, anything the juubi does is now only possible thanks to obito. Obito might not be able to control that power fully or he may even be letting the juubi roam free for a but the point is that its all part of "Obito".