Maybe? IIRC Tachi is a bit longer than a katana, but worn like a saber (blade side down) due to it being a cavalry sword, while odachi is usually reserved for the VERY BIG tachis? If it’s just a bit longer than an average katana, i think it’s still ok to call it a katana.It's not "longer than a proper katana," it would just be classified as a tachi or okatana, depending on the length of the hilt, as I recall.
He literally said he thinks it's better because he's more familiar with it not because "KATANA IS THE BEST" bsAnnnnnd ya lost me. Katana romanticism is a plague upon the fantasy genre and im not gonna stick around for it. Its been fun ya'll