I think many of those that you term "deniers" are actually "questioners".
I think it may even be a majority.
Is the death rate as high as reported? I am skeptical.
That may depend on the way it is counted. I was surprised to learn that in Germany people who had one positive test result in the past are counted in the death rate regardless of the current state. That would increase the death rate.
Do lockdowns imposed by politicians work? That one is a hard "no" from me.
IŽll second that too. The numbers support this.
I see nothing wrong, and everything right, about questioning the information we are getting. Up until we are assured that what we are hearing has been verified (not just claimed) as true, questioning it is the correct path to take IMHO.
That would be the scientific approach. Questioning the vaccine is called for too. It is admitted that it is not known how well and for how long it will protect. Long term effects cannot be known as the vaccine is not available long enough. Questioners are important to keep this topic in view. For many people questioners are inconvenient.