Director Shimizu said One Piece Film: RED is Non-canon, the film's story has no connection with the Manga plot. But there is some new Canon information used in this film and it has been approved by Oda.
In other words, Uta's character and the film's story are completely unrelated to the manga. So if you want to force it, it won't fit. But later there will be new things that are revealed in this film, such as Shanks' past, fighting style, etc. which will be shown briefly in this film and it is Canon.
This isn't really new, we've seen how Strong World includes Canon's character as the main villain. A legendary pirate who was able to match the power of Roger in the past, namely Shiki. Some new information about Shiki was revealed in Strong World, his background, fighting style and this is still Canon.
However, the Strong World story cannot be linked to the Manga. Yes, roughly speaking, when pirates without Haki mastery can win against pirates who are able to fight alone against 2 Marine legends at once.