The idea of Covid vaccine causing Bitcoin crash looks like a mere speculation. The upcoming election is more likely to influence its price than the vaccine production. Prove me wrong 
I don't think it is a speculation, I think it is a deception.
There are a lot of things that happened, Trump and the first lady tested positive, the pandemic happened and then the Vaccine? If the price ever fell the time that the vaccine is made, I don't think that the reason of it is the vaccine, it would just be coincidental. There is no connection with those two that is why I don't think it will be a cause of a dump.