Why do many older women bad talk older men-younger women relationships,but praise older women-younger men ones?

For instance, I hear a lot of older women in real life and even online on YA! say that the man is trying to relive his youth or is shallow, that she must be looking for a father figure or be a gold digger or be a empty-headed bimbo. But they say older women who date/marry younger men are independent, strong, physically attractive, knows what she wants, is confident, and etc.