That’s the thing: open source is the only place where the true value (or lack of value) of these tools can be established — the only place where one can test mettle against metal in a completely unconstrained way.
Did you ever want to build a compiler (or an equally complex artifact) but got stuck on various details? Try now. It’s going to stand up something half-baked, and as you refine it, you will learn those details — but you’ll also learn that you can productively use AI to reach past the limits of your knowledge, to make what’s beyond a little more palatable.
All the things people say about AI is true to some degree: my take is that some people are rolling the slots to win a CRUD app, and others are trying to use it to do things that they could only imagine before —- and open source tends to be the home of the latter group.