Am I the only one who is not maintaining some kind of private Github repo? I am doing this job for the money and not the "coding fun". If I had the urge to code more, I would just do more hours in my regular job and get paid for that.
I can understand why it may be useful if you are making a big switch in terms of the type of programming you do and can see myself putting together a "portfolio" in that case. Otherwise its probably worthless.
This isn't to say I don't have side projects or experiments I do for fun. They just don't go on GitHub (and why should they? It's not particularly more convenient than any other way to host your code. Mostly I use cgit these days since it's very platform portable and lightweight and I can host it internally with just a c compiler), and if they do, there's very little benefit to them being public unless you are doing what I mentioned above about needing to "prove yourself".
I'm not a web developer though, maybe it's more valuable the closer you get to frontend stuff? Just a thought, I don't actually know enough about that to say.