Personally I don't have any problem with Unblack Metal, what really matters to me is the music instead of the lyrical content most of the time, personally I believe that music is a form of art more than anything, so to me it's an expression of the artist's feelings and thoughts, and something that really fascinates me is the passion the musician put in their ideas, feelings and thoughts, I like to enjoy that, feel what they were feeling when they recorded their music, Antestor is among my favorite Black Metal acts (or Unblack in this case) so I would listen to them if they were satanic Black metal as well, or whatever other lyrical theme, but I understand why fans of Black metal dislike Unblack, since it's the opposite of what the creators of the genre had in mind when BM was created.