The threat of quantum computing to Bitcoin is not about the idea that "0 and 1 exist simultaneously," but rather that it could push the security boundaries of current cryptographic systems forward in the future. Right now, this is more of a long-term risk; it's not something that can cause a market crash immediately. However, the security narrative of $BTC will be repeatedly brought up for discussion. In the short term, the market sentiment leans toward suppression, and there's no need to be overly nervous just yet.