I made these arguments two decades ago when I was still in university that PDF is a horrible format because it's purely præsentational, especially for people with disabilities whose software relies on semantic information. LaTeX last time I used it didn't even have a different symbol for uppercase Alpha and A because the glyphs are indistinguishable.

They argued that PDF was superior because the publisher could control how it looked and it looked the same everywhere but the point is that it should not. Things such as font size and line spacing should be at the control of the consumer, not the publisher. This isn't simply blind people but for instance also persons with dyslexia who use particular fonts to make it easier to read for them. Or in my case, someone who simply gets a headache from fronts and line-spacing that is too big. I've also been using darkmode everywhere for so long now that reading black text on a white surface on a screen gives me a headache.