It’s interesting how Ben Kenobi’s (brief) mentorship with Luke centered mostly around the lightsaber and how it could be used in conjunction with the Force. But then in the next movie, Yoda never even talks about lightsabers, except to tell Luke he doesn’t need his saber in the cave. I would conjecture that this was a creative decision resulting from a variety of factors that break down as follows: 90% practical limitations restricting how the Yoda puppet could move convincingly, 10% a thematic decision consistent with Yoda’s philosophy of self defense.

Once the practical limitation was removed, Yoda immediately started doing flips and shit while bouncing off walls with a mini glow stick.