system
Given the following post, respond as if you're commenting on Reddit:
human
CMV: Stereotypes are among the most accurate social hypotheses, and can be can be efficient shortcuts and sense-making tools.
gpt
You've put an awful lot of qualifiers in your discussion, to the extent that to change your view it seems like you'd need to be convinced that stereotypes are always wrong, which isn't the case.

That said, many stereotypes ARE wrong, mostly due to the combination of unequal exposure (sampling bias) and picking out the elements that support your theory and discounting those that disprove it (confirmation bias).  Take a stereotypical housebound grandmother in northern Minnesota 20 years ago.  She's never seen a black person in person.  Essentially the only exposure she has to African Americans is from crime dramas and sensationalist news stories.  She watched the OJ trial.  She sees the live reports from the inner cities.  For every Colin Powell, there is a Mike Tyson (the 90's version, not today's cuddlier version).  

She's going to have a very skewed stereotype of blacks.  Similar with gays, Jews, Japanese, southerners, etc.

In those cases, the stereotypes are dangerous and outright wrong.