are you talking about it activating your Crushing Flames Bonus? in that case, as long as you have 3 Items with Crushing Flames, it should still activate.
if you are asking if having CF (5) is still good, that is what most players use. if you have Ring and/or Necklace Items with either Legend or Myth Stone +4 All Sets, you will have some nice Builds to work with. this would give you Epiphany (5) and Crushing Flames (7) if you are still activating the CF Bonus.