> Toxic employees hurt the team or organization whether low performing or high performing, and with rare exceptions it’s almost always worth getting rid of them. Toxic employees are the people getting into arguments and conflicts all the time, dragging others down constantly.

Often such people have good arguments, they are just vocal about them and not the "docile" kind of people. For example the great engineer who is willing to fight to keep the code well-architected and clean.

Of course managers hate this kind of "non-docile" employee, and thus invent terms like "toxic" to be capable of bullying (and perhaps having a "socially accepted" reason for firing) them.