ETH, NEO, NAV, ARK, LSK, WTC etc. are also pump and dumps because they rose sharply then fell, which is basically the extent of your reasoning. You can even call this an attack on BTC by supporters of BCH, but again, there are still very real reasons for this rise, and from what I gather, they are trying to unseat BTC, not just make a quick buck, which is what a pump and dump is. I get that this entire argument is basically semantics, but, again, you are trying to apply rationality to an irrational market. I'm not touching BCH because it's far too risky. I'm just saying, you should be aware of what's going on.
Either way, I think we can agree that this isn't good for the cryptosphere in general.