The cognitive dissonance is strong with this one! Science deniers somehow manage to hold two completely contradictory criticisms of scientists simultaneously: "They keep changing their theories!" and "They're too stubborn to change their views!"
It's like complaining that a restaurant has too many menu options while also whining they never update their menu. Pick a lane, people! This is exactly why the scientific method exists - to systematically test ideas and revise them based on evidence, not to confirm whatever nonsense you read on your uncle's Facebook page.