Can Madara and obito really use rinnegan?

[VongolaX]

Owner doesnt know how to use his rinnegan,bullshit

 

[Mugen Tsukyomi]

The only reason that Obito even went through the trouble getting the rinnegan was so that he could summon the gedo mazou, and plus when he had his paths of pain it took considerable amount of consideration to keep them in line.