I analyzed the scores for the WACO 2023 MPO players rated above 969 (which was all 166) and the 45 players in the FPO field rated above 899.
While there were no "bad" holes for MPO, what immediately jumps out is that the most popular scores on the MPO course are often also the lowest reasonable score. This makes it hard to pull ahead of the field. For example, even if a player got a legit birdie 2 on hole 1, they didn't really pull ahead much because 59% of the players also got a birdie.
Actually, it doesn't matter whether the lowest score is birdie or par, legit or not. If a lot of players are getting the same lowest score, this kind of distribution pretty much assures a cluster of players tied at the top.
But, hey! Drama is more important than actual competition, right? (At least until the top players figure out that all the skills they've honed won't help them win, so they stop showing up.)
The most effective hole for MPO was #18. It added more to the information content of the final total scores than any other hole.
The most random hole seemed to be #9. Despite the huge scoring spread width on that hole, it contributed very little to the final sorting of players. Which makes me wonder if the back-up was worth the wait.
In contrast, the FPO holes offered a lot of chances to get a low score that not too many other players got. Even though there were a lot fewer FPO players, the FPO course gave out just about as many different scores to FPO as the MPO course did to MPO. Without the cluster at the top.
There were a couple of holes on the FPO course that actually destroyed information. Holes #13 and #16 pinched most players into a score of 4, and any lower or higher scores seemed to be doled out mostly by luck.