Tony would so have some type of online presence. I can see him randomly posting stupid behind the scenes videos of him and the Avengers.
Some of his more viral videos:
✔️The Jurassic Park theme playing while he slowly zooms in on Steve reading a newspaper at the kitchen table.
✔️ Sneaking up on Clint eating cereal and watching cartoons only to shout loudly near his ear. The cereal goes flying and Clint is off the couch in seconds swearing and threatening Tony. Video cuts off seconds before Clint pounces on him.
✔️ Tony and Bruce rapping about the periodic table in the lab at 3am (it took a lot of convincing to get Bruce to let him film it and he is pretty sure he only agreed because he is sleep deprived)
✔️ Tony just staring seriously into the camera holding up a peace sign in the back of the Quinjet after a battle. In the background you can see Natasha sleeping, Bruce listening to music, Thor watching the camera, and Steve guzzling down a bottle of water.