Spiritually speaking, Vivekananda says that Lord Krishna is an Yogi.......?

Krishna is both a King and a Yogi. This shows that there is no need of renouncing the things to attain Moksha or Liberation. And in Raja Yoga he says, One should be a witness in every daily activity and thoughts, Activity is not important, Witnessing is important for achieving non-attachment. The act of witnessing cuts the attachment with things. And we can get out of the illusion of Maya. What do you say?