Imagine, for instance, that we started tracing HIV strains and jailing gay people.
And then arguing that having sex isn't really necessary and abstinence is the only way to prevent transmission.
The implications of what you're saying is appalling.
If someone went around having unprotected sex without telling their partners, then I don't see a problem with a civil suit from anyone they infected to make them pay for the damages they inflicted.
If I were to distort your view like you did mine, I'd say that you're arguing for the ability to go around punching anyone else in the face because to prevent you from doing so would be starting down a slippery slope that would lead to authoritarianism.
"you must face the consequences" is perhaps the most authoritarian thing you could say when arguing in favor of severe penalties.
I expect there will also be social penalties. The world isn't going to forget the people who chose not to take basic steps to protect each other. It's a violation of the social contract, and that comes with consequences.