It matters in this case because for tesseract, the exact model is incredibly important. For example, v4 is pretty bad (but what is available on most linux distros when ran serverside) whereas v5 is decent. So I would have had a more accurate interest in this post if it was a bit more upfront that "Tesseract.js lets you run OCR against PDFs fairly quickly now, largely because of better processors we as devs have, not because of any real software change in the last 2-3 years".
I felt this before for his NLP content too - but clearly it works because he's such a great explainer and one for teasing content later that you do read it! I must say I've never been left confused by Simons work.