Not at all. I used to day trade in the future's markets and let me tell you, day traders and "HODlers" are essentially the same in the sense that they both want to see the price to increase. Regardless, the more long-term investors or "HODlers" you have the fewer people you have that are willing to sell. Which creates what? Short supply. What happens when you have shorter supply? You get higher demand. Day traders will be able to take advantage of that and trade accordingly.