I can validate your cringe feelings, since this demonstration, which I could describe as a limp-wristed provocation or maybe if I'm feeling generous as some tepid détournement from someone who maybe watched too much gossip girl, also doubles as actual merch advertising. Consider this: AOC also sells through her webstore what seems to me a bona fide fashion line of clothing sporting the "Tax the Rich" slogan and her personal brand at a steep markup. Granted the profits are stated to be used as fundraising, but the exercise of commodifying unrest against the rich is still being performed. If it makes you feel uncomfortable, it's because it is full of uncomfortable implications.