Everyone knows that there are a lot of rightwing crazies in the USA who believe in insane conspiracy theories. Many of these wackos, after being incited by Trump, staged a murderous and treasonous attack on the US Capitol.
Ho hum - old news. But when one of these far right nut jobs is in elected office, rather than just being some middle-aged loser living with mama (like QAnon Shaman), THAT is a sick and sad situation. That's why Marjorie Taylor Greene is potentially so dangerous to the United States. She's not just some random, powerless rightwing nut job - she's in a position with a certain amount of power. Very scary for the country!