This back and forth swing is really bad for the markets.. really. It's a reason why do many think the crypto space overall is overhyped, and they are correct. If people jump from one coin to another just for the sake of making money, without caring about the value of these coins or what they have to offer, then of course the markets will be volatile and unpredictable. And it's always the same patters - BTC forks, therefore everyone jumps to Alts, and when the fork is complete everyone jumps back to BTC. I doubt anyone can make easily money out of this, the stress involved on whether this actually will go through and that value will follow these forks is really arbitrarily. Investors should focus on real value, and not perceived value, or short term gains. The crypto space will grow so much within the next years that people will be banging their heads for not holding some of the tokens they sold a month ago.
It's called speculating and this is what all of trading markets including stock markets are based on.
Do you think stock investors care what an underlying company has to offer? All they really care is for the price to go up for them to earn money, and if they see company is underperforming, they will transfer their investment into another one.
I'd recommend you have a read of 'The Warren Buffett Way' by Robert Hagstrom. He is possibly the most successful investor in history, and I think that in his view, there is nothing speculative about the stock market, if you do your due diligence. I think he would argue that what the underlying company has to offer is the most important aspect of an investment decision, and the share price matters very little, if the price you paid is less than what you expect the value of the business to be in the future.