The market growth is promising and the same is being related with different things. This is so common, whenever there happens something positive with bitcoin people start to relate the growth with any of the incident happening around the market. Covid-19 vaccine will not make any impact upon the cryptospace, because the market isn't reactive to sentiments.
sometimes everything always relates to the situation with bitcoin but it is true that you say that not all can be related. because sometimes there is no relationship at all with each other which may just be a coincidence.
The discovery of the covid-19 vaccine clearly has nothing to do with bitcoin because we know that during the pandemic, bitcoin is running normally and there is no connection between them. Sometimes people are quick and easy to associate a problem with what is happening with bitcoin.