Perhaps it shocks your moral sensibility to generalize across humans, but it is perfectly legitimate for anyone who is seeking the truth to do these things. For them, the primary question must be "to what degree is a generalization meaningful?".

When we say things like, "The African American population in the US is materially disadvantaged.", that statement does generalize across many individuals. But it's also potentially very useful or actionable.

Also, anyone who says they judge people as individuals is probably bullshitting to the max. It sounds cognitively overburdening and wasteful.