And spacing. To say what?
Very little.
(To be clear I know nothing about it either, but as a human with some similarly "pointless" hobbies, I can't imagine posting a writeup with so much motivational bullshit but so little about the actual thing I'm interested in.)
I'm willing to give them the benefit of the doubt that they ever actually tried learning Sumerian, but to be maximally cynical they never provide any specific personal details about that. It could literally just be a prompt.
(I am reminded of a Fallout side quest, where you help a Museum retrieve artefacts and they talk about how the constitutions was moved around, maybe by airplane .. point being, history will be fun to reconstruct after a robot nuclear apocalypse)
I'm not a fan of the author's writing, but you can look at their other articles and see the same (non-AI feeling) style of writing and general theme of content (airport-book style motivation).