This post assumes that everyone wants to 'move up' in their career. Maybe, but what is wrong with not doing that? Is it the worst thing to keep doing what you like doing, being comfortable and enjoying life?
I know that many people are driven to reach a certain goal in their career, but that doesn't mean that everyone has to do that. Some people might want to just go to work, do their thing, and take home their salary. That isn't bad, it is just different.
To move up in your career you should get out of your comfort zone and take risks. I think this is what the author meant. It is fine if you are content with your position.
It’s not bad to not want to move up in your career, but it’s a horrible mistake to get complacent in tech. The chances are that either you will either get forced out or you’re going to want to leave. When that day comes, if you spent nine years stuck in a bubble doing the same thing - especially if that thing isn’t management of a successful product - you’re going to find it harder to find a job.
I know that many people are driven to reach a certain goal in their career, but that doesn't mean that everyone has to do that. Some people might want to just go to work, do their thing, and take home their salary. That isn't bad, it is just different.