I don't think AOC is getting a free ride, nor that she needs one. She went to an event full of rich people and declared that those rich people should pay taxes.
Some outlets are trying to paint this as hypocrisy, as if believing that rich people should pay a higher tax rate is akin to hating them and wanting them dead (which, I'm sure to many rich folks, the idea of having to pay their share of taxes is a fate worse than death). But it is not the same thing - we can be pro-rich people and also pro-rich people paying higher (or any!) taxes. Hell, if rich people paid higher taxes, I'd be a lot more comfortable watching them throw decadent parties, whether for charity or not.