I think it's good to keep in mind the concept of signal and corrective[1] when reading this blog post. This blog is a corrective assuming an environment where people don't speak up enough about things that are going wrong.

If you're in an environment where harsh criticism is regularly thrown out, to the point where everyone is constantly on guard and major CYA is the norm rather than the exception, this advice is not for you (you need another nice blog about when to shut up, and how to deliver criticism without being hostile, etc)

[1]: https://everythingstudies.com/2017/12/19/the-signal-and-the-...