I directly acknowledged the guardian and samurai aspects so I really don't know what you're talking about. But I'll address both again.
Wano has many characters deemed a guardian deity spirit and Yamato is meeting the quota along with Luffy and the scabbards by freeing it from Kaido. I've shown panels proving that the citizens give that title to anyone that's actively protecting the island. Even then, Kaido, who was referred to as a guardian deity as well, was still going out to sea as a pirate. You then inserted your own headcanon that having a devil fruit of a guardian spirit makes her any different than those other people also considered deities.
Yamato never said or hinted that she wanted to become Oden just cause he's a samurai that protected Wano. Want to know what she did say?
She did not say "I want to protect Wano like Oden did". She says she want to go on adventures like he did. Living free on the seas. Right after this, she asks Ace about the outside world and she's starry-eyed hearing about it. She asked nothing about how Wano is doing or the current state outside of Onigashima. Her main interest is the outside world. If you think her character arc is becoming a samurai then she can do that AND leave Wano since you know, that's what Oden did. She's not forced to give up one for the other.
So now that I've shown I'm not ignoring aspects of her character, how about you answer my questions in turn
1) If her main drive is to stay at Wano to protect it, why did she declare she wants to leave with Luffy even after her "most character defining moment" with Momo along with knowing his future role?
2) If she's meant to give up her dream of going on adventures, why did Oda have the panel above along with Ace and the three samurai encouraging her? All of which paints this dream in a good light and not something meant to be changed.
If you're not gonna talk about those two questions then its clear you're just here to be anti-Yamato.