I’ve never felt dependent on public code repos for my own career before,

I hope you don’t actually believe this.

I think you misunderstood me. We all use open source software or develop using open source libraries, and in the context of the question, I don’t care where they host their code, as long as I can find it. But that isn’t what I was talking about. I have never felt like my career depended on me publicly hosting my own code. I have found jobs and connected with people through other means, and they haven’t even asked to see my github profile in any interviews I’ve been in.

which is why you should always open source your code unless there’s a specific reason not to. If you’ve ever made something that works, then your cube would be useful.

Sure, I have a Python script running on a Raspberry Pi controlling my garage door opener. You want it, I’ll show it to you. I believe in open source software, but I’m not going out of my way to publicly host (and document, yuck!) every little thing I’ve made for myself, especially when they have often been tailor made for my home environment, or hacked together in 15 minutes and riddled with secrets.

But my main reason is simply privacy. I don’t want to broadcast to the Internet what project I am working on right now, or reveal the architecture of my home network or smart home setup. There’s a lot you reveal about yourself when you show the world what you are doing, and I would prefer not to do that.