Yeah, we should be very concerned about that, So I wouldn't call it just a pump because there is major disagreement to which is the real bitcoin. The miners will decide its simple. no matter what is happening there is great manipulation and its done right and perfectly.
Miners aren't qualified to decide. All they should do is mine. They don't have the vision or the intelligence to make decisions for everyone else.
I wouldn't say that miners lack the vision or intelligence to make decisions. I would just say that it's not just up to them, so they can't really decide anything alone. Yes right now they are swapping to BCH because it's more profitable to mine it, but if we prefer bitcoin, and don't sell our coins, BTC will still be more valuable, and as the difficulty adjusts, it will again be more profitable to mine BTC instead of BCH, and miners will switch back to BTC.
It's a business for them, and they are in it for the profit, I totally get it, but in the end they can't really decide anything. The market is ruled by supply and demand, so if the demand is still bitcoin, they will switch back to the most profitable coin to mine.