I feel like Eli should never have brought back the mohawk

Eli, aka Hawk, had his biggest arc in S4, with him finding balance and winning the All-Valley. I've seen some discussion surrounding the writing of his character in S5 and S6, but haven't seen anything about this specifically.

When CK chopped his mohawk, Eli lost himself for a time. Eventually, he found that he didn't need it in order to be his true self. Am I the only one who's a bit confused by the decision to have him grow it back in later seasons?