In real terms, the median human globally today is vastly richer than at any point during the twentieth century.

And the median American is also richer in real terms, both in terms of wealth and in terms of income.

Of course, that all assumes that you use a reasonable measure of inflation that’s stable, well-designed, and applied methodically and consistently over many decades.

Alternatively, you can cherry pick data points and go based on vibes, which lets claim whatever you want!