An 87-page animated PowerPoint isn't going to render well on an iPhone even if converted to a PDF. However a 5 minute YouTube video would be great. But most faculty do not want to re-make their course materials into something new and modern. and they certainly don't want to publish their stuff on YouTube. So students are left having to access traditional formatted course materials with their modern devices. It is clunky. And they don't like it. But that it not an LMS issue at all.