It already is a search engine and has been for a while.

I think you don't recognize it as such because it's incorporated into the chat box, but I use chatgpt as my search engine 90% of the time and almost never use google any more.

I think the social stuff will also just be incorporated into the chat interface in the form of 'share this image', etc, and isn't going to be like twitter with a bunch of bots posting.