Why not?
She could like that section of the publication, have had time and thought to herself “why not send something?”
She could have been planning to monetize her travels and could have used the fame.
She could have wanted to communicate her success with people she’s known in Belgium with whom she’s lost touch.
She could genuinely see it as an accomplishment and feel pleasure and fulfillment in sharing it (we’re apparently not impressed - I’m not - but that doesn’t take away that it might feel so on a personal level + we don’t know her origin story).
There are plenty of other reasons she could have wanted to do it.
I see several points of bragging in the article so that colors my view of her potential motivations but I’m sure there are plenty of others that could be likely and of which I haven’t thought.
Edit: she’s apparently selling herself as a career coach on LinkedIn so that could be a marketing operation. @Your_Full_Name You could hire her to help you find the perfect older rich partner of your dreams!
: I’d personally try to target someone in the business of manufacturing power cords used to illustrate AI-GPU circle-network relationships!