I would agree, covid fits the medical definition of pandemic. Saying it is a "so called" pandemic is not accurate.

But are you any better than the person you called out with your projection that covid will cause "tens of millions most likely" people to die? I know of no real evidence to support that statement, based on what is known of coronaviruses specifically. There's many who would consider your statement to be misinformation, also. And fear-mongering.