> How many people die every year from medical deprivation?

A quick search suggests figures ranging from 1 million to 40 million per year. So if you want to compare that to 100 million deaths by communism over the past 100 years, then preventable disease seems to kill at least roughly the same number of people, and possibly 40 times as many.

Victims of Communism and the authors of the Black Book of Communism's own figures are debated by experts of the history of Russia and the USSR, especially during Stalin's reign. Many of the deaths that the Black Book of Communism sites were mostly due to the invasion by Nazi Germany (somewhere around 10 or 20 million iirc). The rest are also mostly not direct deaths by the Bolsheviks or the USSR state apparatus (this is including the famines). And the biggest problem with the book is that it often makes up the figures whole cloth.

This isn't saying the USSR or the Bolsheviks weren't horrible, but one must put their crimes against humanity in the proper context and not turn them into super inhuman villains as much as we did with the Nazis (they too were horrible, but sadly they were very much a product of the mainstream values of their time).

Plus, the claim that allowing for social democratic policies like UBI, IP law reform, and the like to come to fruition isn't going to create another Red Terror. If anything, it's the most conservative thing you can do (see German Empire and the institution of Social Insurance by Otto von Bismarck) since it retains capitalism but tames its worse aspects for a time. This is why I roll my eyes at folks like Thiel since they rarely have anything that would be a viable alternative than status quo and lying about how bad things are for many people today. And I say this as someone who's far left of many folks being a Mutualist and an anarchist.

World population circa 1950 was like 2 billion. I don't know what the root study is that reaches that 100M figure, but the idea that communism killed one in twenty people on the whole planet seems a bit unlikely.

The really high end figures for the worst[0] man-made disaster of all time (the famine during the great leap forward) are 42 million, no idea where you'd get the rest of the numbers from.

[0]: edit: I thought it was the worst: apparently there were several previous famines in China in the 19th century that were more deadly.