What a coincidence, just yesterday I came across an article about what if a teenager watch a vertical drama where family members hurt each others. Those kind of things happen in real life indeed. There's news about a younger brother reported being sexually and physically assaulted by his older brother on Thailand and there's an older brother kidnapped his younger brother in inheritance dispute in China iirc. There's also a father killing his son over monthly allowance in Korea like last year. A father even collaborated with his daughter and son in-law to rob a comedian's decade earning in Korea. And younger sisters have affairs their older sisters' husbands in Malaysia and Indonesia. I think both news and entertainment need to have age restriction.
But there's some problem with age restriction too. I once read a novel and the only protection was a question, "are you over 18?," which will block no one. And with how accessible internet to everyone, there really no way to prevent children to be overexposed to cruelty, violence, and sexual ehm things. So it's indeed true the one that could protect oneself from watching such things is only himself. And for children, their elders.
Because people making money from writing news, novels, and scripts. And people making money producing music videos, movies, dramas, music videos, variety shows, contents. And all genres attracting their own viewers/readers. Where there's money, there's people. There's no way to make them not making things that earning money, right? There's so many Chinese danmei novel writers got arrested, did Chinese writers stop writing danmei novels? No, even when there's jail time and financial penalty waiting for them. Just don't watch them.