They were small before Mizuki left already, but yes, even more now.
Mizuki has been fired for good reasons though and he definitely wasn’t a popular member anyway.
I support the band as it is now. They continued through corona without a drummer and their original main composer but still released music and did lives. Because of the composer change, their sound changed a bit yes, but I support how they didn’t give up and are so active now despite everything. Many bands with similar or bigger budgets have been slacking since corona.
If they really changed “so much” I wouldn’t enjoy the lives anymore either.
(I’ve been following them since they formed from abroad and actually been able to see them regularly~often in Japan since their 1st anniversary live)