Considering the amount of child porn, snuff videos and other forms of debauchery coming through these "apps", it's amazing that they prosecute people for viewing or having these videos on their phones.
Actually, I think it's the opposite. I'm surprised the feds/Interpol didn't go after these people for having the stuff on their computers. It's illegal to look at unless you're in law enforcement. It's thought crime and the law supports it being thought crime.
The government of America already shut down Craigslist personals on the dubious claim that it was to stop trafficking. Don't assume that even a corporation is insulated from this sort of targeting. Reagan sent the DEA after Monticello for growing poppies. The people there were so intimidated they even destroyed sweatshirts with a picture of a poppy on it.