Zero, that's my point. It's a waste of time.

It's something to talk about on a podcast, so it is not a waste of time. Also, for many of us programmers, we really need programming in our lives otherwise we get that itch.

Your comments have been terribly absolutist about your own opinions. Please accept that other people have different priorities than you. Accept that other people have different comfort levels regarding their children's privacy than you. There's nothing wrong with your priorities, but there's also nothing wrong with people whose priorities are different.

I'm not saying people don't hide their children's faces, I know they do, saw it first in Japan more than a decade ago.

Im also not saying anything against his priorities, I don't care how he spends his time.

What I am saying is I don't think this app will make money, so if that is his main motivation, then it's a waste of time.

So you have never done passion projects just to keep your skills up and stay familiar with an ecosystem?

No, not really. I've done passion projects for things I have a passion for, but not for keeping my skills up.

Well many people do. Like Casey, I did a pivot from pure software development to a job that pays much more given my skillset and interest. But is much more of a niche.

I keep an active open source profile just so I can pivot back to pure software development if needed. Casey likely makes more as a podcast host than he would make in corp dev as a mobile developer. Before that he was a .Net developer.