On Github you have to fork a project first if you want to create a pull request. I randomly opened three of the forks and saw that he'd made pull requests for two of them.
The only thing I can suggest to the author is what others have already said - go in to academia/research and volunteer your time to selected interests.
One scenario in which the author's attitude and desires could work is if he starts his own business and focuses on the fun things while paying others to do the boring stuff. But then again - building a successful business to achieve the luxury of total choice takes a lot of "boring" work beforehand.
But, by and large, if you don't care about being paid, why not just work on your own project. Because there's pretty much no such thing as a 100% no-BS position anywhere.
On the other hand a profile of meaningful contributions looks the same on the surface.
So I'm actually in the position where I do have meaningful contributions to open source projects, but my Github profile doesn't show it (unless you look at my contribution activity).