So, looking for the wildest claims from the middle of the cold war and trying to pass them off as fact?
If you look at the estimates the article actually uses:
By the end of 1940, the population of the Gulag camps amounted to 1.5 million.[13]
According to some estimates, the total population of the camps varied from 510,307 in 1934 to 1,727,970 in 1953.[4] According to other estimates, at the beginning of 1953 the total number of prisoners in prison camps was more than 2.4 million of which more than 465,000 were political prisoners.[22][23] Between the years 1934 to 1953, 20% to 40% of the Gulag population in each given year were released.[24][25]
Your number is several times higher than the highest estimate used outside of the historiography section (in case anyone reading is unfamiliar with the term, historiography is the study of how our understanding of history has changed over time, and so includes references to claims that have now been widely discredited).
Right: Things are shit because of the people who are already marginalized (letting us take advantage of pre-existing prejudice and targeting the people with the smallest platforms to push back against our narratives)
Left: Things are shit because the people at the top are fucking over all of us together
Center: Things aren’t shit
In the absence of a leftist narrative, the most fundamental Center vs Right disagreement is just whether or not things are shit. As things get shittier and shittier, the Center will keep losing strength to the Right.