I'm convinced that Count Dooku was a character quickly shoehorned in as a villain when the filmmakers got pushback from execs for having Jar Jar Binks as the actual Sith Lord (with Palpatine merely being the Apprentice).
Don't quote the old magic to me @hyperhopper, I was there when it was written.
It's a fun fan theory, up there with Chewie/R2 being secret leaders of the rebellion and pre-prequel theories about "what actually are the clone wars", but it relies on George Lucas being incredibly subtle in a trilogy where every other metaphor is written on giant billboards with spotlights on them. I mean the whole thing is a setup to "Jar Jar is Snoke".
There were similar rumors that Lucas had the entire sequel/prequel trilogies planned out at the end of RotJ from the mid 80s until the prequels came out. Down to the EU books/comics (which he famously doesn't care about) being Lucas' plan all along. It was just "the man" keeping him from making the movies. That the man didn't stop him making the original Star Wars before he was an extremely famous extremely wealthy movie maker was handwaved away.
It's the fun logic hoop fan version of "No Trump/Musk is actually playing 7D chess! What he actually meant was..."
I did a rewatch of the prequels just to show a friend all the Darth Jar Jar evidence that never comes to fruition. We were robbed of a better experience.