Because the founding of the USA and its history is a complex thing as a nation its done many wrongs like its contemporaries and forebears but it’s also done a great deal of good. There’s also a bit of “What’s the point?” Being mad about the USA existing is pointless, it’s founding went like almost every nation in human history, with violence lies and political bullshitting. It’s far more productive and less damaging to my mental health to focus on what needs to be fixed