You literally have no proof to it being canon outside of your opinion. Just grow up and deal it with, kiddo.
EDIT: Did this kid really just use the same retarded argument as Vulpini? What the **** does fan website have over deciding which anime episodes are canon or not? Do people actually believe they get some kind of sourced information from Kishimoto or SP saying that this episode was canon? No, they don't.
Please go link SP's website stating that these anime episodes were legit in the story, por favor.
Funny enough, the Kakashi Novel even talks about the Prison from the Blood Prison Movie, which is filler.
How illogical can you be? Talking about something from a filler being shown in the Manga, like holy shit.