No, SL is merely the chain itself that allows "SegWit+Legacy" adresses and transactions. Before, counting 2nd layers.
Sure BCH relies on the "good behaviour" of miners, but they want to profit and that's why they do it. It's not supposed to be normal for it to be the other way around.
The other way around is how the SL network, also called "Bitcoin BTC" or just "Bitcoin", works during rush hours as of the last years. But I can (almost certainly) promise it won't for BCH, because the theory is sound again and people are working hard on making onchain scaling a reality this time.
You don't "need" to do anything. The choice is yours.
RE: What I think makes Bitcoin Bitcoin, and why I think Bitcoin Cash is Bitcoin