Sounds good on paper. In practice, what people do on Github is worthless.
I've only one company ever actually looked at what I made on GitHub. Otherwise, they'll never check out what I've done even if a project is listed on a resume. Nobody has the time or amount of shits to give to actually review your own code. Very few people I know who are working as software engineers even have any serious projects or contributions on GitHub.
As much as I love doing side projects, the idea that companies care what I do on GitHub is some of the worst advice I've encountered. Now my profile is full of trash I've forked along the way and it hasn't made a lick of difference as to how many interviews I've gotten.