They don't care.

Also they will claim that the death of communism is some widely agreed upon number that is corroborated by numerous organizations and sources.

In reality it is literally like the one single 'study' that proved the autism/vaccine connection. It came entirely from the Black Book of Communism in 1999, and all but the main author disavowed it, and despite the obsession with wanting to reach 100 million. The absolute max it could find was 94 million with a 'most likely' number of 64 million.

So when they give a death toll of 'conservatively 100 million' they are literally pulling it out of nowhere.