Shitcoiner, nobody, attention-whore, segwit2x traitor and all-round ugly girl has opinions:
1/ there is a very real possibility the price of bitcoin does not go up after halving. for the first time, there is a robust derivatives (futures, options) market for bitcoin. most firms looking to speculate on bitcoin will trade a derivative, not the underlying.
She is right at what she is posting latter. But the first post you quoted is really silly. Bitcoin price is so unstable that will be way different next week not just a year from now. The point she is right about is that future trading makes bitcoin more stable. So growths and declines will be less sharp. Both ways will be more stable not just the way up. And that is good, money need to be as stable as can be.