The best time to document isn’t two weeks before leaving. It’s right now.

But even more, why a small employee in his right mind would make himself replaceable for the good of the company...

I've always found that job protection was the mark of incompetence, if you're good then what do you fear ?

Thank you for your comment.

yes, english is not my first language, so I use AI to helping me structure the article, but I've edited and fully reviewed and take responsibility for every word in it. (Anyway I will trust less AI next time, so thank you)

What I was trying to say is that if you do less because you don't like where you work, you are losing opportunity to learn skills, or worst: you are learning to do less in general. How can you find a new and better job if you are doing less?

Good habits and reputation carry forward.

Before AI people would still say things like this. "The best time to plant a tree is 10 years ago. The second best time is now". Among the set of such constructs, some are overused by LLM and have become a symbolic of it, but they will still show up in human writing with the same frequency as before.