> Just like parents have done for kids for the past 30 years or more.
Parents traditionally haven't though. They relied on rating systems for television content and movies to efficiently screen out content that might be unsuitable for children. These voluntary rating systems were formed in different countries, at different times, for different media (e.g. video games, movies, television, and comics each have their own). It's important to note that these generally accepted rating systems were created as a voluntary measure to avoid widespread regulation of content.
Parents for the last 30 years didn't hand select movies to watch, they read the synopsis, looked for the rating, or asked a friend or employee at the video store for the rating of the content. They used a recommendation system, but that system was a fair bit more interactive. It's anecdotal, but in my high school and university days I worked in video stores, over about an 8 year period - translates into literally hundreds of user education sessions talking about how rating systems work what they cover and don't cover, and regional differences since Canada uses different ratings than the US and often had both a Canadian rating and a US rating.
Your "healthy response" statement also clearly comes from a position of reasonable economic privilege - I can also indulge my childrens interests, and do regularly through sports and other activities, but for the majority of middle class families, that kind of indulgence is out of reach due to the cost.
It's just not economically viable for most families to enroll their kids in something to help them "learn about it safely", any more than most families have time to create curated lists of content (which requires a degree of technical proficiency that is also somewhat challenging for many people).