That’s just the opinion of the person who did the video. I got the impression that the person playing had a more generally favourable perspective on it than the interviewer but was caught reassuring him that it was short.
I think it’s still jarring for people to go from a hardcore brawler to a music rhythm game but this game has something for everyone. I know personally I’m not too jazzed about the taxi racing since I’m not a fan of racing games at all but Haruka’s definitely have me excited.
Stay positive though it’s a huge game and Sega know there’s a large audience however spread out we may be. If they can market this well enough and plan for a smaller release, as say Atlus games do, then they can bring it over for the hardcore fans and maximise profits with little worry about recuperating investment costs on an internally developed title.