Hi, I'm Xavi, the author of the medium post.
What would be a really good outreach is if you contact the author of the
medium.com article and ask him if he'd like to improve the inkscape.org
extension guide with the information he's written on his blog.
I certainly don't mind contacting them and asking...or inviting them to help
with the official guide (especially since I've been "pushing" to get a guide
written). But I'm not sure if it would be appropriate. Kind of like making
"cold calls" an old telemarketing term, meaning to sell something to
strangers who have no previous interest in the product.
You can quote or simply copy my text without quoting, or I can do it myself if I learn how.
Its totally no problem, just let me know.
I wrote the text in medium as a self-guide on how I learnt to make a simple extension but since I am not a developer I was not sure it was ok. If anyone with more experience thinks this guide is good enough for inkscape guide to get started in inkscape extensions Ill be more than happy to help.
:)
Xavi