Is it true that enlightenment is not the end of emotional suffering because ego is still there?
No, it’s not true. In authentic enlightenment, emotional suffering is absent, and ego is no longer there. Ego is the source of all emotional suffering, and for as long as the ego is still there, the emotional suffering is still there and vice versa. People who claim that their ego is still there, but they don’t emotionally suffer, are either disingenuous or still emotionally repressed to various degrees. Those things are also connected, since all dishonesty and insincerity are rooted in emotional suffering.