That's because embarrassingly bad writing is useless, while embarrassingly bad code can still make the computer do (roughly) the right thing and lets you tick off a Jira ticket. So we end up having way more room for awful code than for awful prose.

Reading good code can be a better way to learn about something than reading prose. Writing code like that takes some real skill and insight, just like writing clear explanations.

Some writing is functional, e.g. a letter notifying someone of some information. For that type of writing even bad quality can achieve its purpose. Indeed probably the majority of words written are for functional reasons.