One of the strengths of TOS and science fiction in general has been its willingness to criticize the society and times it was living in, and to show how attitudes might change in the future. A message they *weren't* sending was "The 20th century is wonderful".
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The Neutral Zone was a rare case of Next Gen doing this, and actually laying it a lot thicker than TOS ever did. (In TOS it was confined to short asides by Spock.) I think our era deserves a hell of a lot of criticism, so it was all cool and interesting to me, except for Picard thinking it would be alright to let them die.
The crew turned out to have been wrong to some extent, but who doesn't have cliché images of this or that group or era in her/his head? The woman is the only one of the three who seems really stable. The rich guy was a loose cannon who brought it all on himself.