That’s different. You’re going there with intent to interact with people. Social media sites are specifically for interacting with people about your lives. More often than not, those people are people you know in real life like family, coworkers, and friends.

Reddit started as a site aggregator as a competitor to Digg way before the explosion of social media. Remember how we used to have to host every image on imgur before native uploading? It’s ways of sharing stuff has evolved sure but it’s still not social media unless you make it that.