If you read the comments below the article, the reason CPS was called was because someone recognised the couple from an earlier case. In 2015, they both were apparently arrested after blowing up a shed in their backyard while attempting to make "honey oil" (hash oil made using a solvent, typically butane or propane). Dome's kids (at the time) were taken away by CPS after the incident. Both Dome and her (now) baby-daddy were arrested, along with some other person.
But if they hadn't shared the video publicly, that person likely wouldn't have seen the video and wouldn't have reported them to CPS. If you've got any kind of legal problems, you should probably be a little more protective of your privacy.