There's a big difference between offering socialized mental health care to anyone who needs it and forcing people to take it. It's like saying we shouldn't offer socialized medical care because the government may drag me in to the doctors office and force me to wear a cast. I do understand the negative connotations and our checkered past with mental healthcare in general though I'd like to think we've come a long way and we should address failures on a case-by-case basis.
The slippery slope is real though. In the UK relatively minor infractions have gotten babies seized from their mothers, not for criminal justification but for health department reasons.