I cannot think of a practical reason why Segwit needs to be activated in LTC if the coin itself does not attract enough users to make it necessary. What if it becomes activated but nobody uses it? What good is it if it is not really that necessary?
You got a point actually. I think the big reason is that LiteCoin wants to be a genia pig or an experimentation for SegWit so that if SegWit can be really successful then it can leverage the same success for its own advantage. People behind LTC must be thinking that they have nothing to lose and a lot to gain in implementing the SegWit without waiting for its implementation in the mother Bitcoin. Hope this can boost further the value of LTC.