Less negativity and more listening by everyone can be a place to start.

I tried that with someone once, I got an enormous list of complaints about all the wrong things everyone else was doing wrong.

And utterly zero awareness of what they themselves were doing wrong.

Attempting to explain it to them was a complete failure.

It’s a fun challenge to try to enlighten them about how things can go wrong with their approach.

With what time?

Middle managers don’t suddenly get 28 hours in a day after someone offers this suggestion. Their schedules are already maxed out, so every extra minute of focused attention needed is literally coming from someone else’s (or some other department’s) budget.

And then they go on to be a (difficult to work with) 10× developer?

Instinctive social judgement definitely exists. Is it a good metric to find good employees? Dunno, maybe?