>>27245442While that may be true, there can be something said about developing fanbases, and with more work you put out, the more potential you have to grow.
While the whole "Wow" factor may be gone, her VOD views continue to tower over the rest of the girls in EN (and possibly JP, i haven't checked in a while) mainly due to her songs, and how many of them people add to Playlists and have on in the background. While this may not see massive returns for all of her work, algorithms will recommend more songs of hers and lead into more exposure, generating both revenue and attention, which is what a corporate music label fucking loves.
All that being said, burnout can be a bit of an issue, but she hasn't shown any signs of slowing down yet, so I remain hopeful.