WillRikersExtraNipple (fantastic username btw) I understand what you're saying, I really do. And I agree that pregnancy-policing or body-policing are terrible things and we need to not encourage the idea that women's bodies are public property or that being pregnant turns you into a walking gestation chamber with no bodily autonomy. Society exerts so much ownership of women's bodies already, and that leads to so much damage (and imo is a contributing factor to rape culture). There are so many threads on MN about being judged and lectured for things like exercising or eating cheese while pregnant. Awful.
But... we do not live in a world where people can do literally anything they want and it's "no one's business." We have laws, and pregnant or not you have to obey the law. No one is suggesting pregnant women be subjected to anything more than non-pregnant people, namely: don't do anything illegal or widely accepted as anti-social. We don't need to lock pregnant women up on the off chance they'll start abusing substances and commit violent crimes, any more than we need to lock them up to make sure they don't rob a bank.
Being drunk and disorderly is against the law. ABH is a serious criminal offense. IF drugs are involved, that is also illegal (there are plenty of people serving prison time simply for possession. I don't agree with that, but it is the law: if it bothers you join the fight for decriminalization or lobby for substance abusers to be ordered to therapeutic care rather than prison time). It's not unheard of for (non-pregnant) people to get arrested or sentenced to prison or Sectioned due to substance abuse. The government can issue DBOs (Drinking Banning Orders; now replaced by CBOs) essentially banning certain individuals from drinking alcohol.
This woman has committed criminal offenses. If she was not pregnant, she would perhaps be facing criminal charges right now. Would it be better for the authorities to ignore her pregnancy and simply lock her up? She should not get a pass for being pregnant.
I wonder if a non-pregnant sleb was getting in the tabloids all the time for being wasted, violent and generally an abusive trainwreck, if posters would be lining up to defend her right to do absolutely anything (legal and illegal) she wants?