No, but it greased the skids. It made it easier. Social Media became one of the weapons or vehicles used by the destroyers. It's hard to pinpoint the exact "cause" because every cause had something before it that caused it. As a primary cause I would point at is the Sexual Revolution of the 1960s which gave birth to feminism, and then,...sexual non-accountability for women, birth control, and abortion, all of which removed any and all restraint on Hypergamy. It all eventually led to an explosion of divorce, which led to an explosion of single mothers raising boys to be weak, coddled, sheltered, misled, and feminized. So back to social media,...social media made it easier to preach the gospel of this stuff far and wide.
Let's not forget about the public school system though. If you can mold the next generation from childhood, you then "own" the future,...you just wait for all the current people running the show to die off, and then, in moves the newly programed younger generation. We now have boys as early as kindergarten being taught by women teachers that they are toxic while the girls sitting next to them are victims that can do no wrong.