George wanting to see Yoda fight is all I can think of. Nothing was accomplished narrative or character wise by him fighting.
You guys just seem to make up a reasons to knock the prequels. Just online haters trolled that fight scene. The audience loved it when I saw it.
Second, that whole interchange was about Anakin’s twisted mind allowing Dooku to get away. Had he stayed disciplined and they fought him together, the Clone Wars would have ended right there. They would have uncovered the plot from Dooku’s body and probably even Palpatine’s involvement.
Third, Yoda showing up to fight Dooku is what saves Anakin and ObiWan’s life.
Finally, every duel in the prequels tells you how good each Jedi is in comparison. Obi Wan always struggles with Dooku. Anakin later gets bettter than him. Yoda just toys with him to gauge his skill, then when he figures out that he’s not master-quality, is going to kill him (until Dooku brings the ceiling down to escape).