Carrot got exactly what she needed to continue her adventure with the SH in Wano. All it takes is a minimal understanding of the story and unbiased perspective to see it. Here I explain why
Carrot inherited Pedro's will. Pedro wanted to join the king of pirates and help him bring dawn to the world. Roger told him he's on the waiting list and he'll be back for him when he's a little bit older. Who is the new Roger? Who is the new Pedro?
Losing to Perospero is the exact reason for which I think she'll join the crew.
She was too weak to stop Perospero, the man who was responsible for her mentors death, and had to have the Current Ruler of Zou take care of him for her. So why would it make sense for her to willingly take a position she knows she can't live up to in comparison to the previous leaders?
Perospero tells her to go back to zou and at the same time she remembers Pedro's words telling her to go forward
During Chapter 1056, Neko had told Carrot she was dependable due to her adventures with Luffy and the others. This is Oda confirming Carrot had shown growth in her adventures with Luffy, but having her lose to Perospero in order to show she needs to grow. She knows she isn't strong enough yet hence her being completely against the Idea.
Oda then decides to confirm her taking Pedro's will.
Which on top of him wanting her to grow into a strong warrior at any cost, it was to travel with the pirate king and achieve the dawn of the new world. Pedro says to her the same words Roger said to him when he was young
Oda needed a reason to tell you why carrot was special, and give her a reason to join the crew. That happened in chapter 1056, with him confirming having taken Pedro's will, confirming she grew stronger with Luffy, but having her lose to Perospero in order to show she needs to grow. It's literally the perfect strawhat storyline.
Now for those of you who are fond of patterns, we will base ourselves on the only pattern that Oda has confirmed for the crew creation, which is the roles
Oda showed us at WCI that no matter how powerful your crew is, your at disadvantage without 3 keys members: a navigator, a helmsman and a lookout.
Nami, Jinbe and Carrot were able to dodge a tsunami and escape BM’s fleet on their own territory. The 3 built for these keys roles were able to out wit a fleet at sea.
Now lets look at chapter 1061 where the crew is completely ambushed and dismantled underwater by a metal shark 😬
However, Oda still shows us that they needed Bonney, Who find herself in the air acting as a lookout and warn the crew of the danger but it was to late
Oda show that they needed Bonney, who act
luckily as a lookout to realize the danger => this demonstrates a need for the crew.
In the same chapter and at the same moment where Oda show us the need for a lookout he give us a reference to this position and to Carrot with the rabbit barrel propeller. Barrelman = lookout
Oda is just building the situation, showing that she needs to join to fulfill herself and that the SH need her to become the Pirates King crew. I assure you we are reading the same story.