I'm saying that many wannabe FOSS developers won't do this work for even a couple of days or weeks, at a time. Or they just want to do the fun part over a long weekend (hack a messy prototype together), but when it gets serious, they disappear.

You can't even get them to check a board or show some sign of life, once a week. Not even a DM saying, "Busy now, be back end of March." Nothing. They work, when they wanna, and when they don't wanna, they just act like you don't exist.

Or they'll ask a question and get five detailed responses from multiple people within a day, and just never look at the responses. Or they'll say they'll deliver something in a week and just never come back. Then other people end up doing the work, and the increment is delayed.

You can't include these people in a team. They literally slow down development.

It's not lack of talent, it's lack of character.