Nah. It's a true RPG-- your choice in the Grove should have consequences one way or another. Losing a good or bad character depending on your choices makes.
There aren’t any other consequences to this choice that I can tell outside of losing the companions. It would make sense for wyll or Karla h to leave if you kill tieflings, but at a minimum evacuating the tieflings should allow you to keep those companions. Personally Minthara is the main companion that really felt interesting to me and that I liked so I can’t see myself doing a playthrough without recruiting her (plus dual wield paladin is pretty strong later on) and that shouldn’t lock out two companions with major quests
