If you discourage heroism - worse, if you announce that you discourage heroism, the average employee's motivation is going to fall drastically. Everyone will do the bare minimum. Exotic forms of corruption like thrift may even emerge
This is exactly what happens in the wider economy when you discourage heroism in society
Humans naturally want to see the grass greener. If you know all you'll ever be is just a number - worse, if you know you will actually be disapproved of because you tried harder or can do better than average, then everyone (but especially gifted individuals) will perform worse and worse until the company breaks
What this post synthesizes is the managerial's class desire to become the "heroes" at the expense of lump-sumed menial labor performed by faceless employees. It's a parasitical philosophy on work
Imagine you own a company (usually involves years' worth of sweat and tears to achieve some sort of success/profitability). Imagine you hear a manager say "let it fail". I hope the feeling that follows makes it clear that the manager is a sponger