Why is BCH coming up in this discussion? They have exactly the same root problem as BTC, with no LN or equivalent (unless they intend to just copy it over).
That would be a huge pile of hypocrisy when in the end they will have to copy LN from Bitcoin Core after it takes off big time with regular Bitcoin. Right now the only advantage that BCash enjoys is fast and cheap transactions. Well, it is actually two advantages but both will quickly disappear when LN takes root for real.