Fate Of The Fruitless

"every tree that does not produce good fruit will be cut down and thrown into the fire." (Matt. 3: 10 NIV)

How is it possible for many of our Hardshell brothers to say that good fruit bearing is not necessary for being saved from eternal judgment when this verse clearly affirms otherwise? 

Our real primitive Baptist forefathers taught that all who did not have faith and repentance, and good fruit and good works, were lost.