I never understood Pinterest and how it works, but I know that people who DO understand and use Pinterest are basically saying that it’s been completely ruined by AI images.
It was mostly ruined by ads/SEO spam many years before. AI is probably the final nail in the coffin for any of the users who appreciated its original appeal, which was basic image curation from mostly blogs.
I don’t really get the Pinterest hate, but from what I understand it’s because their walled garden content came up in web search results. Anyway I’ve been using their app for over a decade. It’s the best place on the internet to explore visual art. The content is manually curated by users and the feed/recommendation algorithms are super good. It’s got very few and inoffensive ads too. The only issue with it is now the occasional AI content.
I still have no desire to use it, but reading the complaints and explanations of AI wrecking Pinterest has finally given me some understanding of what people do there and why they bother.