Is this really an argument, though? Certainly for any communication style X, some people will struggle with X. Even then, if, for example, speaking demonstrably had far fewer "strugglers", does that automatically make it preferable?

Actually that's why you might want to keep your READMEs well structured and written in simple language.

Plus, it's not like you can't include the occasional illustration or even animation, both of which can really get the point across well at times!

You still should have these docs and pieces of text since there is a lot of value in them, just don't overcomplicate them.

xD