There are at least ten great engineers who've left my current company at least partially because of a single toxic individual.
Every one of them decided to be 'professional' to not 'burn bridges' and they did not name names. The toxic individual is still there. He is still incredibly powerful, and he is still destroying value left and right.
I really, really wish they'd named names. Right now management knows that they had ten undesirable voluntary terminations. They don't realize that they all have a single primary contributing factor. As such, there's no possible way the problem will get fixed.