When I was at PlayStation, it was a hard rule that no new setting would ever be chosen for you, because that's awful CX. Everything was opt-in, never opt-out. That should be a law. Automatic opt-ins only happen when they know nobody wants it, and that's the only way to get engagement in a feature.
Twitch now uses your channel to train generative AI by default. You can opt out of some training here: www.twitch.tv/settings/sec...