If you let a random kid loose on the Internet, they will probably find propaganda / political / incel / gaming / porn / alt-right bullshit, because that is simply what the majority of the Internet is. I remember folks doing experiments back at Google in the '00s where they set a user-agent loose to follow links at random on the web, and the result was that you always ended up back at porn. Kids need some form of guidance to say "This is worth pursuing, this is not worth pursuing", and for a gifted kid, it needs to be someone who can personalize this guidance to their own interests. An involved parent can do that, but a teacher who is literally trying to keep their 30 other students from killing each other cannot.