Sarcasm? Segwit was never pointed at as being something that would get rid of potential spam attacks. People just assume Segwit will instantly reduce fees significantly, instantly reduce mempools significantly, but that's obviously not the case - they should invest some time into getting to know what Segwit is actually about. It makes spamming the network more costly for whatever entity, that's pretty much it. Nothing prevents those behind Bitcoin Cash to keep spamming the network for plenty of more years, if they can justify spending more to susain these attacks for whatever period of time. I am fairly sure that they are greatly contributing towards the greatly increased number of rubbish transactions that we experience right now.