Everytime governments try to break encryption on social media, and they are doing it a lot these days, they hold up an example such as in this case “Sex Traffickers” so if you dare question them, you are exposed as supporting Sex Trafficking, of course this is nonsense, there will always be alternative secure method that the bad guys will use, and law abiding public will be left exposed.

Hard to tell if they just don’t want the law abiding to be secure for their own purposes, Governments have been known to want to spy on their general population. But the better alternative is that they just want to be seen to be doing something about all that bad stuff on the internet. Maybe it’s a mix of both.
Details here: https://act.eff.org/action/don-t-let-congress-censor-the-internet