Since this is an extraordinary statement, we demand extraordinary evidence. To find this evidence, chapter 3, section 1 was used to determine the readability of the text (readability-score.com). The results are:
Flesch-Kincaid Grade Level
Automated Readability Index
Average Grade Level
When "Capital" was published, there was no mandatory education and Marx wishes that workers could only work 12 hours, instead of 16 hours, on Sundays. Form this statement alone, we can understand that England was not yet free from the centuries of the Malthusian trap.
Clearly, any score above 6 would not be understood by the vast majority of population.
In conclusion, we are confident that "Capital" was not written for the illiterate masses, and reluctantly conclude that Apprentice Tyler is, in fact, correct in his observation about the intended audience for "Das Kapital".