I can’t speak to people’s motivations, but I have been a very active member on this forum for a long time, and I was on the Rust team for about a decade, beginning before 1.0.
So the article is more like “Here’s why I started using Rust. If you thought I made a good choice then, well, I’m making a similar choice in case you want to join me.” Seems people find that compelling.
Just like Rust’s success was not inevitable, neither is jj’s. But I think it might work out.
You could also consider this a disclosure of sorts, I post a lot on this forum about jj (and Rust), and so knowing that I now have a financial incentive is important context to some people.
That line wasn’t even in the original post. It is not nearly the only technical advantage. The point of the post is just not about that topic, so that content is not in the post.
This is very funny. People just love jj! There are no conflicts of interest, at least not until now that there is a company built around jj. But they also started it because they love jj!
