Ichiruki had almost nothing going on in the manga, you're just another example of someone who sees some basic tropes between a guy and a girl and makes stupid assumptions lol
Luffy giving his hat specifically to Nami multiple times is more like Ichigo promising to protect Orihime, or Nami crying for Luffy and standing up to Kaido being more like Orihime breaking down when Ulquiorra killed Ichigo.
Here's the best thing to do: stop thinking Oda has to write things exactly like Toriyama, Kishimoto, Kubo or anyone else wrote their stories. I read the Bleach manga and I knew Ichihime was endgame after Soul Society. I've been reading One Piece and I know Luffy x Hancock will never be a thing, and only Nami is a possibility if Oda wants to pair Luffy up with a woman because she has the strongest bond with him.
You sound just like an Ichiruki cuck. They made the same arguments. Rukia forcing Ichigo to stay back in the human realm as Byakuya was about to kill Ichigo, Rukia's connection with Kaien (many Ichirukicucks argued Ichigo was Kaien's reincarnation), the scene where Rukia returns back to the living world and reignites confidence in Ichigo after he was beaten by Yammy. They claimed that only Rukia could bring solace in Ichigo's heart and not Orihime. They said the same thing about Orihime gags.
They specifically used the Ichigo and Rukia goodbye at the end of Deicide arc to double down on their crackship. They used Kubo's statements like Ichigo being a mediator of two worlds to "prove" that Rukia and Ichigo getting together would reinforce that theme.
And you know what they did when their crackship flopped? They sent death threats to Kubo. They wrote messages to Kubo's twitter calling Orihime a horrible character and that she should be killed off. Kubo himself had to release a statement to address those jerk fans and put them in their place.
You LuNatics are going to do the same thing when your crackship fails. Send death threats to Oda and tell him to kill Hancock.