I think Stardust Crusaders is where Jojo gets truly bizarre. The concoction of elements in the narrative was always what one could call bizarre but it mostly worked on a set of established rules. Loose rules but rules, we could often nod and say ‘that makes sense’. Stands however all have their own rule set. Unlike the 2 sources of power in the last parts, ripple and vampiric, every stand is its own thing, we can’t build expectations in the same way, it’s always shocking and it can be anything. Even the most basic rules of stands are not always followed as seen in the monkey fight, therefore, while they have their own built in rules, they serve as their own power source. It’s what allows stuff like these last two fights to occur and take us completely off guard. In a sense I am worried about this because it means fights can be won with elements that were not pre-established, star finger may be an example.
Speaking of these fights, psycho and chucky references show that the body horror isn’t the only thing that’s horror-based. These stands can be a love letter to anything Araki likes. And while this was disgusting and tense, it was also hilarious. Tying Polnareff up under the bed as he isn’t the smartest guy, having just tied his wound up with dirty underwear, Devil was able to shoot shampoo in his eyes to blind him. That made me laugh. I had wondered why Devo told Polnareff of the stand and his name as Avdol knows so much about stands that could hurt him. But with the sick pleasure he takes in terrorizing his victims, it’s clear that he loves this kind of thing and since no one knows how the cursed people die, it means he can afford to be a bit arrogant.
Outside of that we got a new general rule, that some stands need the user to see what the stand does to utilize them. I’d wager this is kind of arbitrary, it seems Hierophant Green can slide through vents and check pipes when Kakyoin has no reasonable way to share that vision, but Silver Chariot would only be able to swing wildly when it’s stand user cannot guide it.
P.S. It just hit me that with ripple still in the story through Joseph, it may be implicit that he is healing the party off screen! It's definitely a perfect excuse for why the cast can take so much damage and be fine the next chapters.