To add to this, reading your post, I was actually surprised to see that someone else is in a pretty similar situation. In my case, I felt the other person was r

To add to this, reading your post, I was actually surprised to see that someone else is in a pretty similar situation. In my case, I felt the other person was really a toxic element and did my best to point it out to upper management, with concrete examples and validation from other team members. I rarely faced disagreement in any of these discussions with upper management but alas they failed to take action. I came to the conclusion that if an organization is incapable to weed out toxic elements despite substantial evidence, it's going to only get worse from here and that it's best to leave the organization as soon as possible.