According to Osho, one does not 'become' Krishna; becoming implies separation. In awakened awareness, the essence of Krishna is already one's own being. Thus the question of becoming doesn’t arise—speaking about Krishna flows from the same consciousness, not from imitation. His point: realize your original nature; drop striving to be someone else, and rest in the presence that you already are.
You don’t need to turn into Krishna; your true self already shares that same light—just be it.