What vital information or services are forbidden to you due to being trapped in PDFs or horrendously complicated web sites? It boggles the mind how many govern

What vital information or services are forbidden to you due to being trapped in PDFs or horrendously complicated web sites? It boggles the mind how many government websites - and government-contracted services from private companies - depend on PDFs as a primary mode of communication. I get emails from my teen's high school directing me to download a PDF for announcements like snow days or COVID updates when plaintext would not only suffice, it would be far more likely to be read by people using mobile phones which is probably the majority of the parents in our district.