The "criteria" mentioned in that post assumes the importance of cinema, radio and television is static, but in fact all of traditional content mediums are just a small detail in the peripheral vision of a younger audience, and they are pushing their values and ideas harder than it was ever possible before. There's culture and counterculture online. It's just not taking place in the same space as before, leaving the old mediums to corporations trying to maximize profits.
Kids and teens don't dream about changing the world through cinema anymore, but rather Twitch, YouTube or TikTok, or if they're really ambitious, a game.
Edit: forgot to mention Discord.