Sorry, but that paints the wrong picture.
Yoda was always going to talk funny but Lucas struggled with the proper syntax of how exactly he should talk. He never stopped struggling and it’s easy to see how even in prequel dialogue he didn’t have it quite as figured out. Kasdan helped a ton and we got to the final version, and of course Oz and Kersh on set added the final touches to be as good as it was but Yoda was always going to talk funny.
This thread loses much of its point when it’s just shamelessly biased.