-Big Mom being used and treated like a comedy plot device throughout the arc, with horrible portrayal like getting rolled by Robin and insane conveniences like Motherly Mode coming in
-Tama coming in with her BS power to get numbers from the enemy side (At least this has some background to it)
-Queen being a complete incompetent fool and allowing his subordinates to go to the enemy side and lets Chopper - who he knows to be a doctor that just healed everyone from his plague - survive
-Luffy getting telepathy and being able to tell Momonosuke that he's fine, and that same ability being used to save him in the depth of water.
-Chopper, who was spared by a Kaido subordinate, now becomes and pulls out fairy tail level of convivence out of his ass and gives Zoro a zensu bean to fully recover from a combined yonko attack.
After Chapter 1016 I thought Oda was going to go down a much more sinister and tragic path to increase the stakes but now I'm starting to seriously question his writing. Some of the events such as Big Mom's Motherly Mode and this healing magic potion could easily have another way of being resolved that isn't nearly as unfeasible, but it seems like Oda is intentionally going out of his way to make this arc trash.