I wrote a reply to this from a more-peripheral-EA perspective on the EA forum here:
https://forum.effectivealtruism.org/posts/YeudcYiArwWrg77Ng/notes-from-a-pledger
Yeah, that critique is part of why "use more links" is among my least confident advice of the stuff in this post. I like links mostly as an alternative to nothing - if there's a term of background that ideally your readers should already know, a link is an economical way to give readers below your target audience in background knowledge a leg up. But for really central terms, yeah, better to summarize in your own words.
I journal! It's a good way to write at least something daily, and often also feels like a good avenue for healthy introspection.