It's so weird, I honestly don't think many reviewers even played it much or through to completion. When I read through their reviewers there's almost no discussion of the very slow pacing in Saejima's section and the complete absence of fighting in Haruka's section.
Prior to its release in its West I felt the Haruka sections would bring down reviewers opinion of the game but to my surprise it didn't seem to effect the scores. As for me the Haruka sections where a pleasant surprise, ended up being my second favourite character section behind Kiryu.
Perhaps reviewers felt it added some much needed variation? This is my only worry with Yakuza 0's scores if reviewers are going to start saying it becomes to repetitive by the end, hopefully not cause it looks fantastic.