If neither you nor universities think that getting a job is more important than becoming a "good engineer" (whatever that means), then who is left to fill this void but the bootcamps you disagree with?
If I find some great engineers in the library and bring them into my team directly, will they do good work? If they prove to do good engineering, would it be a sustainable model to hire directly from our volunteer program?
If this works out, we could replicate this model in other public libraries as well.
The comments above are my moonshot ideas, I'm currently experimenting to see if it can be possible.