What prevents this from degenerating into "You voted for X in 2016, so you have to wear this bracelet / 'voluntarily' attend this re-education camp / only travel in the orange zones on the map"?
This is the same argument just from the other side.
Now while I don't agree with this law on principle I really hate this type of hypothetical argument. If you embark on this road you can argue that a law which is aimed at fixing pot holes will cause the rise of the 4 riech.
Why not beastiality? Consent.
Why not polygamy? Agency, inherent power inequality.
The reason why gay marriage won't "degenerate to polygamy and beastiality" isn't because people are somehow reasonable and know where to draw the line on the slippery slope.
It's because there's no slippery slope at all.
This is exactly what happened with the legalization of gay marriage through the judicial branch.
Your comment is incredibly naive in the face of even contemporary world history, nevermind the generations of slave and feudalistic societies that came before us.
I honestly don't have a problem with that.
I think we should acknowledge that some people are psychopaths who are mentally incapable of having moral qualms about hurting people, whether sexually or otherwise. They can't be redeemed; the only thing you can do is keep people safe from them.