I think everyone's allowed to have an opinion here, so if people want to complain about something they have the right to do so. But we don't even have the full details about the single since it's just been announced, so I guess we should all save our final judgements until we know more about it.
It's just that it's the last chance for Harunan to center a single, and she's never centered one in the 7 years of her Morning Musume career or had a proper representative song that was on a single. The B-side might be the song dedicated to her, but it's just not the same as having an A-side with a music video, promos and all. But it's better than nothing, at least.
Based on the recording Jiyuu doesn't sound promising, here's hoping Furari Ginza is a better song.