Can you give me an example? Because don't see any small text. Are you zoomed out in your web-browser or did you set the screen fitting right? Because some people posted screenshots in the comments here and yeah looks good?
I'm on desktop with a 27" screen, with pages fitting the height, and I had difficulties reading the following texts (had to get closer to the screen, and the quality isn't great so it's still difficult to read):
(page 9)
(page 10)
(page 22)
Additionally, this one (page 14) is kinda hard to read, it's all cramped together. Adding a bit of extra space between the lines would make it much more readable (it also applies for other texts with this font, but because this one is a bit smaller it is more impactful):