Super common response. Same here, despite decades of open source contributions, most of the code I write these days is behind closed doors. But, 100% of the code is on Github, so I have it so that it shows my private commit numbers in public.

I also tend to depend on a lot of open source projects... which means that I also find/report/fix bugs and contribute to documentation... all of which shows up in my public history.

It isn't just about relevant work experience...