Yes in the sense that for a bet like streaking the chance that you can affect the outcome is 100%.
The chance that you can short a "broad range of stocks" and affect their share price is alot less certain. Especially in liquid markets your chance of affecting a blue chips stock price is very small.
There are always a few cases, like Archageos, where you can get so big that you move the stock but those cases are so well known exactly because they are so rare.
