I think i read somewhere that Douyin, the same app but in China, has much less addictive content. Is that because of the company's better intentions towards Chinese customers or because of stricter CCP regulations?

Speaking of regulations, how do libertarians think of government intervention in such case? A free market would dictate the app to be free to use, even if it harms its members, no? Genuine question, i don't know how libertarians think about such dynamics.