Like a bad programmer can push terrible code, get caught at review and performance managed.
But a bad manager can cause much more harm. An organisation with bad management can punch itself in the face very hard and cause significant issues.
Like I have only seen a terrible management culture in 2 of my employees, but for 1 of them, it lead to:
30 or 40 careers damaged, internal stalinist purges. Months wasted on drama. 21 million yearly recurring in wasted IT expense. Probably close on 500 million in non recurring waste over 4 years. 4 million yearly recurring in executive waste. Significant brand damage, significant resume damage for people who worked through it. Actual end user harm.