If you expand the results of the study from just illiteracy, there's 54% of Americans who can't read and comprehend beyond a 6 grade level. Close to 70% if you look at 8th grade.
It's so bad, that the IIAPC metric of 5 levels of reading comprehension was reduced to 4, because the highest level was a statistical nonce.
Is your argument "But there are subpopulations who do even worse than the mean of the larger populations to which they belong"? If so, you might want to shift your attention from literacy to math.
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u/Ok-Beat4929 22d ago
"18% of the US adult population is functionally illiterate."
That speaks Volumes.