Obviously they want to know what you would like to be remembered for having accomplished. They don’t literally care what you want on your obit. They are asking what you would like to be known for to future generations.

Here's a great way of rewording that question: "What accomplishments of yours would you like people to remember?"

The idea is to reach the level of that 0.1%. What is in obituary of Isaac Newton? Christopher Columbus? Sergey Korolev? Shouldn't you aim to something like that?

Well the question is about would you like to see there, precisely.

What mention of career would you like ?

I'd be fine with "software engineer". I'd hope more space is devoted to mentioning that I was devoted to my wife and children.