You start looking at what people have done, not their credentials. Drop the still implicit requirement for college degrees. People who have untraditional backgrounds have often gone through stuff that makes the standard path far more difficult or impossible. Make interviews be about how people think. Give them problems to solve, see how they approach them, not checks on whether they completed Algorithms courses.

You also don't want to go off of follower count - all that signals is you can get attention, not that you can work with others.

I also wonder this, I believe one way this could be solved is by digital footprint, I highly believe this is the way things will shift. Not fully by social currency (follower count etc..), I mean it could matter, but by what you post online and how. Like for example, if you are a hardware engineer can I find you on common hardware threads posting your projects, builds and engaging in other thoughtful discussions related to it? This will make a huge difference.