I’m not super familiar with their ecosystems, but Insta360/GoPro/DJI probably have the most robust apps that will do something *CLOSE * to this. , but nothing that allows posting directly from the device as far as I know.

You’d still need to do a lot of the posting via your phone/computer on an app. BUT, I think your phone can just act as a bridge, with the files still stored on the camera (likely on a microsd).

Outside of static security cameras, no one’s really putting SIM cards in cameras. You’ll find a lot that will share contents via wifi/bluetooth, but that’s still going to require your phone/computer to post.

With my Fujifilm, I can access my camera wirelessly and can even have it set to automatically send JPEGs to my phone, but nothing that will interface directly with social media. If anything, the size of the JPEGs and multiple redundancies would only compound your storage issues.