- They are to far away to reach us
- If they have technology which would make it possible for them to travel faster than light, they have such high intelligence that they don’t recognize us as intelligent beings like we don’t recognize viruses as having any intelligence, so they would never think of visiting us and communicating with us.
On which platforms? For me it seems to be true on the big ones I still kind of use because of some other reasons like Facebook and Instagram, but the niche ones like Lemmy and Mastodon don’t.
One exception of the big ones is YouTube, there seems to still be enough humans creating content so it still out weights the AI generated one.