Well, that's sad news. I don't quite agree that the dismissal was completely undeserved and unfair. Here I'd like to quote from memory Hiroshi Fujioka's words after the scandal with Tetsuo Kurata: "I'm an ordinary person, and like everyone else, I sometimes do wrong. But I also understand that I'm a role model for many, and that's why I try to exercise responsibility." Yes, it's worth remembering that after the Kamen Rider Saber scandal, everything ended with only warnings, but it's still important to remember that there's a significant difference between less-than-praiseworthy behavior and a direct violation of the law (and possibly even a connection to adultery). That is, Imamori probably knew what such actions would lead to. Well, regarding stupid laws: no matter how stupid they are, they must be observed. And just search for "underage drunkenness" to see that it's not so senseless. So, to me, the situation is sad, but in its own way, fair.
And yes, it's a shame to lose Gozyu Unicorn. Especially since the show missed a great opportunity to more or less quietly phase out Sumino. And overall, the clouds are gathering around Sentai.

This is truly unfortunate.

This is sad news to hear. The world can be so mean to people for doing something so small like drinking. Also her figure from Gozyuger was removed from toy shelves in japan stores with how extreme japanese views are in the backward country.

Jesus, they already completely edited her out of the newest episode. No next time preview or date for the next episode either, which indicates the show is likely going on hiatus for reshoots.