Social media has been around since the early 2000s, over 20 years, and easily accessible porn has been around slightly longer. So, no, I am not convinced this is it. Smartphones on the other hand is a possible culprit.
Social media wasn't ubiquitous and certainly not mobile. What was there was an extension of your meat space life. It wasn't until the late 00s early 10s that social media blew up and took on a life of it's own.
