There is no "which was it" question, we just know the virus does it and don't know if the fake vaccines do it, thus we should be trying to avoid the easily avoided fake vaccines and trying harder to avoid the harder to avoid and more clearly dangerous virus
Discussion
I'm honestly not sure what you're basing this idea that covid is dangerous on
I'm aware of no evidence that it's significantly worse than other resp viruses
and in fact there is good reason to think it was already widespread in 2019, with nobody noticing - and all the excess mortality was caused by the panicked response. literally all of it!