I don't know about everyone else but with my eyesight, the text on that page is pretty much impossible to read.
Strange for a blog post url that begins with "accessible".
I have pretty terrible eyesight, but I did not find the font or color difficult to read here.
I just had a look, honestly expecting you to be exaggerating... but wow, that really is strangely difficult to read! I don't know if it's the colour, the font, the weight, or the perfectly bad combination of all three?!
From the second sentence: "Good contrast makes it easier for people with visual impairments to use products."
I found it pretty difficult to read because it is so bright and uses lighter font color.