that, or maybe she really tried to record it, but she couldn't do it in time, or couldn't at all... or they realized there was a time limit for the project after all...It's moreso the mixed messages that's making it worse now. During the anniversary stream we were told the full version of the song would be out once Hina's back to record lines for it... and then the full song comes out without her. Situations can change and there's a possibility they didn't want to leave the people working on the song's production hanging for an indefinite amount of time which I can understand, but sidestepping around the elephant in the living room only makes it more noticeable. Now would be a good time for an update, even if it's just a "Hina's still dealing with some personal commitments, we appreciate your patience" kind of thing.
at least no one forced her... imagine if they were like eien, niji or wactor...