As a user for many years I would have to answer no.
The author would like to make money from it, but even the donation mechanism hasn't been fixed for a long time because he got so little for his efforts.
Maybe if things broke due to changes in Chrome he'd fix that since he uses it himself, but he hasn't been able to make time to implement the most frequently requested features like sync'ing data between Chrome instances.
I think the way forward would be for a wealthy patron to purchase the code and then pay the author to comment/document it enough so that it could be open-sourced, then pay a coder and community manager to develop it into a viable FOSS project with multiple contributors.