The things you’re saying aren’t necessarily untrue, but through a lot of the 20th century, immigrants and their children accounted for more than half of America’s population growth. A lot of us aren’t descended from the batshit OGs but from people who made perilous journeys in search of a better life, so goes the lore (and of course the people who were kidnapped and brought here in bondage). Your point stands, but there’s a whole lot of different crazy here besides just settler crazy.