Sure, that's why I mentioned you can do that, but BCH runs into the same problem as XMR sender privacy. Obfuscation isn't enough. That's the entire reason XMR is switching to FCMP because of statistical attacks.

I admit BCH is more scalable. But whether we hit that scalable "bottleneck" depends on rate of adoption and tech advances. If we never hit it, that advantage doesn't entirely manifest. FCMP also allows layer to be built on top of Monero. 

I think crypto will grow, but I don't believe most people are going to actually use crypto even if given the option tbh. It's just worse than fiat if you don't care about sovereignty and privacy which seems to be the feeling of most people. You also don't "need" to use permissionless money for things you already have permission to do anyway.