Unpaid internships are exploitative and predatory, as you said, especially for young adults struggling to gain the right work experience! Nowadays there's this expectation that we should graduate with 4.0 GPA's have at least 2 years of paid work experience on top of volunteer experience as well by the time we graduate just to only have access/apply to entry-level jobs asking for 5 years of experience.

So sorry to hear about your experience - it's so infuriating to hear about!