[Glyptodon]

I'm not surprised about the OSS contribution rate. I don't routinely contribute to major projects, but over five years ago I once rewrote substantial parts of the MySQL connector for an ORM we were contemplating using at work and got them merged just so we could demo it with support for some MySQL features we used. I also have a github with some really tiny public repos that people in super super niche roles might find useful. And of course I file bug reports and discuss features for projects I use routinely. Do I contribute to Open Source? Yes, I suppose. Am I a super active and dedicated contributor? Not really.

And I kind of think the above ballpark is where a lot of developers are.