Yes, that is also correct. Toxic behavior is present for a variety of unrelated reasons of which many can be cured with a humble dose of self-reflection. Sometimes that lack of self-awareness becomes catastrophic in extreme cases like Bathsheba Syndrome.

People occupying positions of management are more capable of seeing trust issues simply because they have the responsibility to talk with subordinates of their own and reason upon the effectiveness of that dialogue. People without managerial experience generally lack the tools to perceive the behaviors driving the decisions thrust upon them. People outside of management also tend to lack the necessary exposure to situations where these behaviors are present.

There is also the power dynamic. A boss can more easily terminate a toxic employee than an employee can terminate a toxic boss. This power distance prevents many toxic employees from establish trust issues against a superior until there exists a pattern of identifiable behavior beyond a single employee.