You should read the actual paper before dismissing it. Fig 6 and the surrounding discussion shows that their system is able to iteratively optimize a reaction b

You should read the actual paper before dismissing it. Fig 6 and the surrounding discussion shows that their system is able to iteratively optimize a reaction by adding steps and changing reaction conditions. Based on how poorly the model does on its first try, it seems unlikely that it had already just memorized the best reaction. So, they show that the model can try things, observe results, and try again. Also their model converts the "wikipedia answer" into steps that they run on a robot, which hasn't been done before for this specific reaction.