I don't get the lame excuse that somebody who is a manager has some high technical breadth or is a high performer. From working in Silicon Valley I can't recall

I don't get the lame excuse that somebody who is a manager has some high technical breadth or is a high performer. From working in Silicon Valley I can't recall thinking that some random manager would be irreplaceable. Verify the claim then fire the idiot. Sexual harassment is not hard to stamp out after making a few examples of people at a company.