The problem is when the other side is attacking us constantly with mempool spam, while claiming that our network is unusable, and while claiming they have the solution, which is a complete lie since they are selling a centralized scam, which would be exposed immediately if the network got saturated. Once people saw how BCash would collapse with full blocks and once people see them getting kicked out of the network (not being to run nodes) they would change their mind and realize why decentralization isn't cheap, at least with today's technology.
Attacking people that you think are bad is not only wrong, but also arrogant. You don't try to destroy someone, because you are confident that they are trying to destroy you. As you shouldn't escalate or even sustain conflict, neither should you act as someone whose opinion is worth more then someone else's. The truth is that no group should be able to stop Bitcoin and if you are worried that it can, then you should reconsider your support for it as there will eventually be bigger and bigger attacks on it.
You shouldn't attack people who you think are hurting you, you should try to help them understand. And if you think you can't then you need to think some more, as their lives and wellbeing are just as real and valuable as yours.