I really don't understand what the hate is about on this. Like Discord's policy here is really pretty reasonable. Default to teen-mode unless confirmed that you are an adult. Discord, and other social media websites, have a lot of liability and should be held accountable.
It seems like any effort to protect children is hated. This is what annoys me about the EFF's argument. They say this won't protect children, but they offer no alternative solutions that would.