What they’ve done is reprehensible but this is simply misinformation, that livestream has been up for weeks.
Sounds like you might benefit from some white noise sleeping at home. Can play it through your phone or even an old radio set to some quiet static.
You’ll see content from any community that a member of your instance is subscribed to. So on very small instances that haven’t yet “discovered” other communities, the All page will be sparse.
The answer to why is billions of dollars of subsidies to the animal meat industry.