I’ve seen a lot of, girls and women specifically online, claim they’re “soft-hearted” or “cute and kind” but be extremely racist, anti-even documented immigration, say that other cultures don’t deserve a home, and call trans people “not people”. And more.
I think most people who describe themselves in a positive way in general are using it as a facade. I am an ally, I do my best at it, but I am a cis het male born in the 70s raised in a rural farming community. I make mistakes in the things I say, and I as such I only ever say I do my best to be an ally, because I know inevitably I will make a mistake, but I do my best to learn from those mistakes and never make them again.
Think of the hippie/punk comparison, hippies look friendly and welcoming, but are some of the meanest, most judgmental people. While punks look mean and gruff, but are some of the nicest most welcoming people.