Unnecessary? This is not a novel suggestion about the problems with futurists. It may be a generalisation, but it's pretty accurate generally. People privileged in some way aren't going to think much about that privilege. The rich won't envision a future with less (or more) poverty.

What data or study do you have to backup your baseless generalizations?

It may be a generalisation, but it's pretty accurate generally. — [citation needed]

The rich won't envision a future with less (or more) poverty. — [citation needed]

White men are less likely to imagine a future with full gender equality and black liberation than black women are — [citation needed]

People living in the West will think less about the rise of the rest of the world. — [citation needed]

Check out "The Other Foot" [0] by Ray Bradbury.

https://en.wikipedia.org/wiki/The_Illustrated_Man