To me, the greatest threat is information pollution. Primary sources will be diluted so heavily in an ocean of generated trash that you might as well not even bother to look through any of it.
Just as human navigators can find the smallest islands out in the open ocean, human curators can find the best information sources without getting overwhelmed by generated trash. Of course, fully manual curation is always going to struggle to deal with the volumes of information out there. However, I think there is a middle ground for assisted or augmented curation which exploits the idea that a high quality site tends to link to other high quality sites.
One thing I'd love is to be able to easily search all the sites in a folder full of bookmarks I've made. I've looked into it and it's a pretty dire situation. I'm not interested in uploading my bookmarks to a service. Why can't my own computer crawl those sites and index them for me? It's not exactly a huge list.
Now most of the photos online are just AI generated.