It's odd that you admit you don't know what went down but are still passing judgement.
Even if he did, he didn't interfere or impede rescue efforts and gave them a tool they could possible use in the future. It's cool and a nice thing to do, and doesn't really seem like a big deal.
Is this your blog or is it a coincidence that your hn username is the same as the 'chinese 3d-printing expert' from the article?
It's not really that unbelievable that there's a woman who's capable of using tools and building the things that she wears...
Whoever wrote this blog is either really close to the subject or has a very unhealthy obsession.
It doesn't sound like your problem, and maybe the person they report to thinks the employee is doing a good job.
You're not their boss. Don't review their performance.
However, you shouldn't be afraid to provide constructive criticism to any of the people you work with. So if you see them implementing a solution incorrectly, suggest a different approach, and say why.
Louis Rossman (the guy who makes mac repair videos) had this happen to him too, and did some investigating of his own/connected the dots between the Yelp salesperson and the person leaving 1 star reviews on his business page.